Intermediate Vocabulary Words

Academic vocabulary common across TOEFL, IELTS, and multi-test contexts. These words appear in university-level texts and are essential for scoring well on standardized English proficiency tests.

6223 words · Page 54 of 104

invasion SAT TOEFL IELTS

An instance of invading a place, especially to conquer; a large-scale entry that disturbs.

invective SAT GRE TOEFL

Insulting, abusive, or highly critical language.

inventory GRE TOEFL IELTS

A complete list of items such as goods in stock or the contents of a building.

inverse SAT GRE TOEFL IELTS

Opposite in order, nature, or effect.

invertebrate GRE TOEFL

An animal lacking a backbone, such as an insect or mollusk.

invest TOEFL IELTS

To put money to use with the expectation of gaining profit; to clothe with authority.

investigate TOEFL IELTS

To carry out a systematic or formal inquiry to discover facts.

investigation TOEFL IELTS

A detailed examination of a subject in order to discover facts or gather information.

inveterate SAT GRE TOEFL

Having a particular habit, activity, or interest that is long-established and unlikely to change.

invincible SAT GRE TOEFL IELTS

Impossible to defeat or overcome.

inviting GRE TOEFL

Appealing or attractive, encouraging approach or acceptance.

involuntary SAT TOEFL

Done without conscious control or choice; automatic or unintentional.

involve SAT TOEFL IELTS

To include or engage as a necessary part; to cause someone to participate.

ion TOEFL

An atom or molecule with an electric charge due to the loss or gain of electrons.

ionosphere TOEFL

A layer of the Earth's atmosphere that is ionized and reflects radio waves.

irascible SAT GRE TOEFL

Easily angered; having a hot temper.

irate SAT GRE TOEFL

Feeling or showing anger; extremely angry.

ire SAT TOEFL

Anger or wrath, often in a formal or literary context.

iris GRE TOEFL

The colored part of the eye surrounding the pupil; also a type of flowering plant.

irksome SAT GRE TOEFL

Irritating or annoying, especially due to repetition or tedium.

ironic GRE TOEFL

Involving irony, especially when the outcome is the opposite of what was expected.

irony SAT GRE TOEFL IELTS

A literary or rhetorical device where the intended meaning is the opposite of the literal meaning, o...

irradiate SAT GRE TOEFL

To expose to radiation or to shine upon with intense light.

irregular TOEFL IELTS

Not following a fixed pattern, frequent, or consistent; deviating from the norm.

irregularly TOEFL

In a way that lacks consistency or uniformity; not regularly.

irrelevant SAT TOEFL

Not connected with or relevant to something; not applicable.

irreparable SAT GRE TOEFL

Impossible to fix, repair, or restore; causing permanent damage.

irresistible SAT GRE TOEFL IELTS

Too tempting or attractive to be resisted.

irresponsible SAT TOEFL

Not showing a proper sense of responsibility; careless or reckless.

irreverence SAT TOEFL

Lack of respect for traditions, sacred things, or authority.

irreverent SAT GRE TOEFL

Lacking respect for established customs, traditions, or authorities, often in a humorous way.

irreversible SAT TOEFL

Unable to be undone or reversed; permanent.

irrevocable GRE TOEFL

Not able to be changed, taken back, or undone.

irrigate SAT GRE TOEFL

To supply land with water by artificial means, typically to help crops grow.

irritable SAT GRE TOEFL

Easily annoyed or angered; showing impatience.

irritate SAT GRE TOEFL IELTS

To cause slight anger or annoyance in someone.

irritating TOEFL

Causing annoyance or mild anger; annoying.

isle SAT TOEFL

A small island, often used in poetry or place names.

isolate SAT TOEFL IELTS

To separate something or someone from others.

isolation TOEFL IELTS

The state of being separated from others, either physically or emotionally.

issue TOEFL IELTS

A subject or problem for debate or discussion; a matter of concern.

iterate GRE TOEFL

To repeat a process or statement, often with the aim of reaching a desired outcome.

itinerant SAT GRE TOEFL

Traveling from place to place, especially for work.

itinerary SAT GRE TOEFL IELTS

A planned route or journey, including details like destinations and schedules.

jagged GRE TOEFL

Having rough, sharp, and uneven edges or surfaces.

janitor GRE IELTS

A person responsible for cleaning and maintaining a building.

jargon SAT GRE TOEFL

Specialized language used by a particular profession or group, often difficult for outsiders to unde...

jaunty GRE TOEFL

Lively and brisk in manner; self-confidently stylish.

jealousy TOEFL IELTS

The state of being jealous; envy or resentment toward someone else's achievements or possessions.

jelly TOEFL IELTS

A soft, sweet food made by boiling fruit juice and sugar, often used as a spread.

jellyfish TOEFL

A free-swimming marine animal with a transparent, jelly-like body and trailing tentacles.

jeopardy GRE TOEFL

A state of danger or risk.

jerk GRE TOEFL IELTS

A rude or foolish person; someone who behaves selfishly or obnoxiously.

jettison GRE TOEFL

To discard or get rid of something as no longer needed or wanted.

jewel TOEFL IELTS

A precious stone, often used in jewelry; something highly valued.

jeweler TOEFL

A person who makes, repairs, or sells jewelry.

jewelry TOEFL IELTS

Ornamental items such as necklaces, rings, or bracelets made from precious metals and stones.

jog GRE TOEFL IELTS

To run at a slow, steady pace, typically as a form of exercise; to move with steady, gentle bounces ...

jolly GRE TOEFL

Cheerful and friendly; merry; also used as an intensifier meaning very.

jolt TOEFL IELTS

A sudden, rough movement or shock; a sudden emotional or mental shock.

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