Important (Read me first!)

This post is a commentary and does not contain any copyrighted material of the reference source.

We strongly recommend accessing/buying the reference source at the same time.

Reference Source

You can understand each word more deeply by utilizing the following YouTube Posts and PDF files.
Also, see how to use Englist.me?

All Words (219 Words)

You can learn all the words from basic to advanced levels in the order they appear in the contents.
If you want learn all words quickly, you can use Quick Look Video.

Quick Look

Podcast

Advanced Words (53 Words)

If you are confident in your vocabulary, you may prefer to study with content that covers only advanced-level words.

Word List

You can quickly review the words in this content from the list below.

Word	Meaning	Advanced
underwater	adv: below or under the surface of the water
acoustic	adj: relating to sound or the sense of hearing
whale	n: a very large sea mammal that has a streamlined body and breathes through a blowhole on the head; a very large person; impressive in size or qualities
dolphin	n: a marine mammal that typically has a beaklike snout, a streamlined body, and flippers and that feeds on fish and squid
visual	adj: relating to seeing or sight
mixture	n: a combination of different elements, substances, or entities, usually in non-uniform proportions, resulting in a homogeneous or heterogeneous blend of physical or chemical properties
fig	n: a sweet and soft edible fruit with many seeds or a tree on which these grow
communicate	v: to share or exchange information with others by speaking, writing, moving your body, or using other signals
snorkel	n: a tube-like device used for breathing underwater, with one end in the mouth and the other above the surface of the water
dive	v: to jump into the water with your head and arms going in first, or to move down to a deeper level underwater
vision	n: the ability to think about or see the future with imagination and intelligence; the faculty of being able to see
restricted	adj: limited in extent, number, scope, or action, especially by official rules, laws, etc.
claustrophobia	n: a persistent and intense fear of enclosed or small spaces
marine	adj: relating to the sea and the creatures and plants that live there
mammal	n: any animal of which the female gives birth to live young, not eggs, and feeds her young on milk from her own body
evolve	v: to develop gradually, or to cause the development of something or someone gradually
explore	v: to travel to or penetrate an area or a country to learn about it; to thoroughly examine a subject or a possibility to learn more about it
echolocation	n: the use of reflected sound waves to locate objects, particularly by dolphins and bats.
echo	n: a sound heard after being reflected off a surface, such as a wall or a cliff
orient	v: to position or adjust someone or something for a particular purpose; (noun) the countries of Asia
prey	n: the object of a hunt; an animal hunted or trapped for eating
decide	v: to make up someone’s mind about something; to come to a conclusion or judgment after considering options
baleen	n: whalebone, or a flexible material made from keratin that is used by whales (and some other animals) to filter krill and other small organisms from seawater
reproductive	adj: connected with the process of reproduction; relating to reproducing babies, young animals, or plants
advertise	v: to draw attention to something such as a product, service, or event in public to encourage people to buy, use, or attend it
mate	n: a person’s partner in marriage or romantic relationship; an animal’s sexual partner; a peer or friend; (of the game of chess) checkmate, which is the winning condition of the game
bond	n: a close emotional connection between two or more people; a certificate of debt that a government or corporation issues to raise money
critic	n: someone who expresses opinions about the quality of books, music, etc.
captivity	n: the situation in which a person or animal is kept in prison or a space that they cannot escape from
imitate	v: to copy the speech, behavior, appearance, etc. of someone or something
mention	v: to speak or write about something or someone briefly
representation	n: the act of speaking, acting, or being present on behalf of someone officially; a statement of facts and reasons made in appealing or protesting
plot	n: a secret plan or scheme to achieve a specific goal; the plan or main story of a literary work; (verb) to plan secretly, usually something illegal
frequency	n: an ordered array of colors into which a light beam can be split
notation	n: a system of symbols or signs used to represent information or communicate ideas; a written or printed mark or signs used to indicate musical notes, mathematical formulas, or linguistic elements
whistle	v: to make a high-pitched sound by forcing breath through a small opening, usually with the lips or fingers; (noun) a piece of equipment that forces air or steam against an edge or into a cavity and so produces a loud shrill sound
tweet	n: a short, high sound made by a small bird; a message sent using Twitter, the social media application
calf	n: a young cow, bull, or other domestic bovine animals
imitation	n: a duplicate of anything, particularly something valuable; the act of replicating someone or something
humming	adj: producing a continuous, low, vibrating sound like that of the bee
tune	n: a musical composition or set of musical notes that are played or sung; (verb) to adjust or set something to a specific condition or standard
nonhuman	adj: not human; belonging to or characteristic of animals or things rather than people
puzzle	n: a situation that is difficult to follow or solve; a game, problem, or toy that tests a person’s ingenuity or knowledge; (verb) to cause someone to feel confused because of something difficult to understand
devote	v: to commit or dedicate oneself or one’s time, effort, or energy to a particular task or purpose
primate	n: any mammal of the order Primates, which includes monkeys, apes, and humans
squirrel	n: a small to medium-sized rodent with a bushy tail, found in almost every part of the world
isolate	v: to physically or socially separate someone or something from other people or things
variability	n: the fact or quality of something being likely to vary
contrast	v: to put in opposition to show or emphasize differences
signature	n: a person’s name, often handwritten, written in a distinctive way as a form of identification or authorization; a distinctive feature or characteristic that is a hallmark or identifying mark of something or someone
individual	n: a single person or thing, as distinct from a group
radical	adj: relating to the essential aspects of anything; far beyond the norm, mainly used of opinions and actions
develop	v: to grow or expand; to improve or refine through a process of progress and refinement, often to achieve greater sophistication or complexity; to elaborate or add detail to something that is in the process of being created
complicated	adj: involving a lot of different things or parts in a way that is difficult to understand or analyze
distinctive	adj: having a quality or characteristic that makes it stand out from others
identify	v: to recognize someone or something and say or prove who or what they are
moth	n: an insect with wings similar to a butterfly that travels at night and is attracted to light
norm	n: something that is regarded as usual, typical, or standard
drift	v: to move smoothly and slowly in water or air, especially as a result of outside forces, with no control over the direction
chase	v: to pursue something or someone to catch or capture them; to go after something vigorously or with determination; (noun) a pursuit or a hunt; a narrow groove or channel cut into a surface, often used for decorative purposes
separate	v: to force, take, or pull apart; mark as different
percentage	n: the number, amount, or rate of something, which is usually the amount per hundred
maximum	adj: the largest or greatest amount or value attainable or attained
distance	n: the amount of space between two points, measured in units such as miles, meters, or kilometers; the extent, scope, or range between two things, such as distance or emotional distance
meter	n: a device used to measure the amount of a particular substance or attribute, such as length, volume, or time; (prosody) the accent in a metrical foot of verse
individually	adv: separately or apart from others
stereotype	n: a fixed and unvarying idea or image that people have about what someone or something is like, but which is often not true in reality and may cause hurt and offense
stable	adj: firm and steady; not easily moved, disturbed, or changed
exception	n: something that is not included in a general rule or pattern; a person or thing that is excluded or stands apart from others
alliance	n: a partnership or association formed for mutual benefit, particularly between nations or organizations.
converge	v: to move or draw together at a specific location; (of lines) to move towards the same point where they join or meet
sweep	v: to clean something, especially a floor or an area, by using a broom; move swiftly and smoothly
process	n: a series of actions or operations performed to achieve a particular outcome or goal; a systematic procedure or approach used to accomplish a specific task or objective; a method of treating milk to make it suitable for consumption or use in other dairy products
disturbance	n: something that interrupts a settled and peaceful condition or that makes someone feel nervous or worried
surround	v: to be all around something or somebody
disrupt	v: to prevent or stop something, especially an event, activity, or process, from continuing in the usual way by causing a problem or disturbance
approaching	adj: drawing nearer in time or space; coming close to someone or something
cohesive	adj: causing cohesion; bringing people or things together
interval	n: a period between two events or times; a short break or pause
passe	adj: no longer fashionable or current; outdated; considered to be old-fashioned or out of date
pristine	adj: new and completely free from dirt or contamination
environment	n: the natural world such as air, water, and land in which humans, animals, and plants live
distribute	v: to give something to a large number of individuals, or to spread or furnish something
decline	v: to become gradually smaller, fewer, worse, etc.; to refuse to accept
negative	adj: having the quality of something bad or harmful; expressing refusal
population	n: the total number of people in a country, region, or location
conscious	adj: being aware of and able to respond to what is happening around you
benign	adj: kind and gentle; not harmful or malicious
regulate	v: to control something, especially by means of rules or laws
intensify	v: to increase or make something increase in extent or strength
recreational	adj: relating to or for leisure or pleasure; done for enjoyment rather than work or duty
boundary	n: a real or imaginary line that marks the limit or extent of something and separates it from other things or places
chemical	adj: relating to or connected with chemistry;
pollution	n: the introduction of harmful substances or waste into the natural environment that causes adverse change
broad	adj: very wide; general
barrier	n: a fence or other obstruction that makes it hard to move or get in; any condition that makes it difficult to make progress or to achieve an objective
movement	n: a group of people working together to achieve a shared goal, especially a political, social, or artistic one; the process of moving or being moved, physically or figuratively
interconnect	v: to connect similar things
experiment	n: the scientific test conducted to observe what happens and gain new knowledge
oceanography	n: the scientific study of oceans and other bodies of saltwater, including their physical, chemical, and biological characteristics, as well as their interactions with the atmosphere and land
deploy	v: to move troops or weapons into a position or military action; to bring into something in an effective way
loudspeaker	n: an electronic device that amplifies sound, typically used to address a large audience or to play music or other audio content in public areas
satellite	n: an electronic device that is sent up into space and moves around the Earth or another planet, used for gathering information or communicating by radio, television, etc.
amazing	adj: extremely surprising, especially in a way that you like or admire
glob	n: a small, round mass or lump; a drop or blob of liquid or viscous substance
transit	n: the act or process of passing through or across a place or state; transportation
halfway	adj: in or at a point midway or an equal distance between two points
globe	n: the earth or world, mainly used to emphasize its vastness
acoustics	n: a branch of physics that deals with the study of mechanical waves in gases, liquids, and solids, including topics such as vibration, sound, ultrasound, and infrasound
theoretical	adj: relating to the concepts and principles upon which a particular topic is founded, rather than practice and experience
transmit	v: to send or forward an electronic signal; to pass something from one person or thing to another
biology	n: the scientific study of life and the natural processes of living things
long-range	adj: relating to or extending over a long distance, period of time, or range of possibilities
propagation	n: the act or process of reproducing, multiplying, or spreading, often referring to the reproduction of plants or the dissemination of information
exploit	v: to make full use of and gain an advantage from resources, opportunities, etc.
property	n: a thing or things that belong to someone
fin	n: a thin flat part on the body of a fish or other aquatic animal used for propulsion or balance
reproduction	n: the process by which organisms create offspring; the production of something similar to an original work
skeptical	adj: doubting that something is accurate or useful
naval	adj: of or relating to ships, sailors, or the navy
submarine	n: a type of underwater vehicle or vessel that can operate beneath the surface of the water; (adjective) beneath the surface of the sea
microphone	n: a device that converts sound into an electrical signal used for recording sounds or making the voice louder
hydrophone	n: a device used to detect and analyze sound waves in water, typically used for underwater acoustics research, sonar systems, or underwater surveillance
cable	n: a set of wires covered by plastic or rubber that carries electricity, phone signals, etc.; a solid thick rope made of twisted hemp or steel wire
shore	n: the land along the edge of a sea, lake, broad river, or other large body of water; (verb) to support by placing against something solid or rigid
Atlantic	adj: relating to or located near the Atlantic Ocean, which is the second-largest ocean on Earth, located between the continents of North and South America to the west and Europe and Africa to the east
latitude	n: the distance of a place north or south of the earth’s equator, measured in degrees; freedom from normal restraints in conduct
detectable	adj: capable of being discovered or identified
routinely	adv: on a regular or habitual basis; in a manner that is customary or expected
anticipate	v: to expect or predict that something will happen; to tell in advance
blues	n: a style of music characterized by its melancholic and soulful qualities, often featuring vocals, guitar, or harmonica; a feeling of sadness or despondency
disperse	v: to spread out or distribute over a broad region, or to cause something to do so
temperate	adj: mild or moderate in temperature or climate; exhibiting self-restraint, particularly about the consumption of food, drink, or other indulgences; showing moderation or restraint in behavior or attitude
tropical	adj: originating in, located in, or characteristic of the tropics
humpback	n: a large whale that has a hump on its back and long flippers, found in both the northern and southern hemispheres
congregate	v: to come together or gather in a group or assembly; to collect or accumulate in a particular place or area
tradition	n: a belief, custom, or way of doing something that has been passed down from generation to generation within a group or society
breed	v: to keep animals for producing offspring in a regulated manner
mod	n: a modification or alteration, typically one made to improve something or increase its functionality; a British teenager or young adult in the 1960s, noted for their clothes consciousness and opposition to the rockers
typical	adj: having the usual characteristics or traits of a specific group of things
weird	adj: extraordinary, unexpected, or difficult to explain
wipe	v: to clean or dry something by rubbing with a piece of cloth or paper or one’s hand and removing dirt, food, or liquid
old-fashioned	adj: of or relating to a time in the past; not modern
statistics	n: the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data
reverberate	v: to be repeated several times as an echo
distant	adj: far away in space, time, or where you are; far apart in relevance, relationship, or kinship
faint	adj: not strong, clear, or vigorous; slight or weak
dominant	adj: more important, influential, or easy to notice than anything else of the same type
axis	n: a real or imaginary straight line through a body or figure around which the object turns; a group of countries in special alliance
ambient	adj: relating to the immediate surroundings of something; creating a particular atmosphere or mood, often through sound or lighting
indicate	v: to show, point out, or make known something, often through a sign or a symbol; to suggest or imply something without stating it directly
seismic	adj: relating to or caused by an earthquake or earth vibration
variable	adj: likely to change or vary often; (noun) a symbol, like x or y, that is used in mathematical or logical expressions to represent a value that may be changed
spot	n: a particular location or place; a small round or roundish area, differing in color or feels from the surface around it
dominate	v: to have or control a lot of power and influence over somebody or something
planet	n: any of the nine large celestial bodies that circle in the solar system; any celestial body that revolves around a star
aggregate	n: a collection or sum of different things often used to describe a total or combination of items
slide	v: to move or cause to move smoothly along a surface without interruption
industrial	adj: of or relating to or resulting from industry
detect	v: to find or recognize something, especially something difficult to see, hear, etc.
addition	n: the act or process of adding something to something else; the process of adding numbers
mating	n: the act of pairing a male and female for reproductive purposes
recover	v: to return to a former condition, health, mind, or strength
endangered	adj: at risk of extinction because it is facing significant threats
strategy	n: a detailed plan of action designed to achieve a long-term or overall goal.
shift	n: a slight transition in position, direction, or trend
studied	adj: deliberately considered or scrutinized; carefully thought out or planned
bass	n: the lowest part in polyphonic music; a type of fish belonging to the large order Perciformes, or perch-like fishes
singe	v: to burn something slightly or superficially, usually by mistake
tenor	n: the general meaning, mood, or sense of something, often referring to the overall content, theme, or tone of a speech, written work, or musical performance; a person or vocal range typically having the highest natural adult male voice
induce	v: to persuade someone to do something; to cause to act in a specific manner
compensate	v: to make up for a loss, injury, or inconvenience by giving something of value
silent	adj: without any or little sound
shifting	adj: constantly changing or moving
probable	adj: likely to happen or likely to be true
opportune	adj: suitable or happening at a time that is suitable or convenient for a particular purpose
concerned	adj: feeling worry or interest about something; showing interest or attention
habitat	n: the type of natural environment in which an organism or group usually lives or occurs
degrade	v: to make something worse, especially in quality; to show or treat someone in a way that makes them seem no value and do not have the respect or reasonable opinion of others
function	n: the purpose or use of an object, system, or process; a particular activity or operation that is designed to serve a specific purpose; a mathematical concept that describes a relationship between two sets of values, called the input and output sets; (verb) to operate or work in a specific way, or to perform a particular task or purpose
promising	adj: having the potential to be successful, helpful, or beneficial; showing signs of future success or achievement
maritime	adj: relating to or connected with the sea, especially about shipping, navigation, or commercial activity
organization	n: a group of people who work together for a shared purpose
guideline	n: a general rule or principle that provides guidance to appropriate behavior; a piece of advice or instructions that tell you how something should be done or what something should be
industrious	adj: hardworking, diligent, and persistent in effort
intelligent	adj: having the capacity for thought and reason, especially to a high degree
propeller	n: a device with rotating blades or vanes used for propulsion or creating lift, typically used on boats or aircraft
insulate	v: to protect something by interposing material that prevents heat, noise, electricity, etc.
machinery	n: a group of large machines or the components of a machine that make it work; social institution functions or structure for doing something
hull	n: the main body or frame of a ship, airplane, or other vehicles, or the outer covering or shell of a seed, fruit, or other objects
primarily	adv: mainly
shipyard	n: a place where ships are built, repaired, or stored; a facility or area where shipbuilding or ship maintenance activities take place
adopt	v: to choose to follow something; to legally take a child from another family and care for them as if they were one’s own
gradual	adj: happening slowly over a long period of time or distance; not steep or abrupt
illustrate	v: to provide pictures, photographs, diagrams, etc. in a book or something for explanation
collision	n: an instance of two or more objects or entities crashing into each other, usually resulting in damage, impact, or conflict
squeak	v: to make a high-pitched, short, sharp noise; to speak or say something in a high-pitched, weak, or timid voice
moving	adj: causing strong emotions or feelings, especially sadness or sympathy
container	n: a receptacle or object used to hold, store, or transport something; a large standardized metal box that is used for transporting goods by sea or land
discuss	v: to talk about or examine in detail through conversation or debate; to exchange ideas, opinions, or information on a particular topic
bay	n: a part of the coast that is partially enclosed by land; a compartment or section of a ship or building
lane	n: a narrow road in the countryside; a well-defined track or path for someone such as a swimmer or driver
fee	n: a sum of money charged for a particular service
signify	v: to indicate, represent, or communicate something, especially an idea or concept, often through a symbol, gesture, or word
petition	n: a formal written request, usually signed by a group of people, which is addressed to a person or organization in authority, seeking a specific action or redress of grievances
creative	adj: relating to or involving the use of skill and original and unusual ideas to create something
independence	n: freedom from another’s or others’ control or influence
initiate	v: to begin or start something; to teach the basics or fundamentals of something to somebody; to formally admit someone into a group or organization
greenhouse	n: a building with walls and roof made chiefly of transparent material, such as glass, for growing plants in
emission	n: the act of production or sending out gas, heat, light, etc.
competition	n: a situation in which someone is attempting to beat or outperform another
fuel	n: a substance that is typically burned to generate heat or energy
consumption	n: the amount used or eaten; the act of using up a resource such as energy, food, or materials
conclude	v: to come to an end or close; to reach a judgment or opinion by reasoning
advantage	n: a condition or circumstance that puts one in a favorable or superior position; a beneficial feature or asset that someone or something has
attentive	adj: paying close attention to something or someone; showing interest or careful consideration; being mindful or observant
vigilant	adj: keeping careful watch for possible danger or difficulties
unintentional	adj: not done or made on purpose; accidental
achieve	v: to successfully complete a task or goal, often through hard work, perseverance, and dedication; to attain or accomplish something that one has set out to do