Meaning: Impossible to eradicate or remove.

Part of speech: adjective

Example: The disease was deemed ineradicable.

Category: Medicine

Synonyms:

• permanent
• unremovable

Meaning: Lacking the ability or strength to move.

Part of speech: adjective

Example: The inert body lay on the ground.

Category: Science › Physics

Synonyms:

• motionless
• inactive

Antonyms:

• active
• mobile

Meaning: The tendency of an object to remain at rest or in motion unless acted upon by a force.

Part of speech: noun

Example: Inertia keeps the car moving until the brakes are applied.

Category: Science › Physics

Synonyms:

• stagnation
• inactivity

Antonyms:

• activity
• motion

Meaning: Unable to be avoided or escaped.

Part of speech: adjective

Example: Death is an inescapable part of life.

Category: Philosophy

Synonyms:

• inevitable
• unavoidable

Meaning: Too great to be calculated or estimated.

Part of speech: adjective

Example: Her contributions to the project were of inestimable value.

Category: General

Synonyms:

• priceless
• immeasurable

Meaning: The quality of being certain to happen.

Part of speech: noun

Example: The inevitability of change is a part of life.

Category: Philosophy

Synonyms:

• certainty
• inevitableness

Meaning: Not accurate or precise.

Part of speech: adjective

Example: The measurements were inexact and needed adjustment.

Category: Science › Measurement

Synonyms:

• imprecise
• vague

Antonyms:

• exact
• precise

Meaning: Unable to be used up or exhausted.

Part of speech: adjective

Example: The library has an inexhaustible supply of knowledge.

Category: Education

Synonyms:

• unending
• limitless

Meaning: Impossible to stop or prevent.

Part of speech: adjective

Example: The inexorable march of time cannot be halted.

Category: Philosophy

Synonyms:

• relentless
• unstoppable

Meaning: Unable to be explained or understood.

Part of speech: adjective

Example: The phenomenon was inexplicable to the scientists.

Category: Science

Synonyms:

• unexplainable
• mysterious

Meaning: Too strong to be expressed in words.

Part of speech: adjective

Example: She felt an inexpressible joy at the news.

Category: Arts

Synonyms:

• indescribable
• unspeakable

Meaning: In a way that is impossible to separate.

Part of speech: adverb

Example: The two issues are inextricably linked.

Category: General

Synonyms:

• inseparably
• entangled

Meaning: Incapable of making mistakes or being wrong.

Part of speech: adjective

Example: The plan seemed infallible until it failed.

Category: General

Synonyms:

• unerring
• perfect

Antonyms:

• fallible
• imperfect

Meaning: The state of being well known for a bad quality or deed.

Part of speech: noun

Example: He achieved infamy for his role in the scandal.

Category: General

Synonyms:

• notoriety
• disgrace

Meaning: The act of killing an infant.

Part of speech: noun

Example: Infanticide is a serious crime.

Category: Law › Criminal Law

Synonyms:

• baby killing
• child murder

Meaning: An intense but short-lived passion or admiration.

Part of speech: noun

Example: Her infatuation with the celebrity faded quickly.

Category: General

Synonyms:

• obsession
• passion

Meaning: A psychological condition where a person feels inadequate or inferior.

Part of speech: noun

Example: His inferiority complex affected his self-esteem.

Category: Psychology

Synonyms:

• insecurity
• self-doubt

Meaning: Relating to hell; extremely troublesome or annoying.

Part of speech: adjective

Example: The infernal noise kept me awake all night.

Category: Literature

Synonyms:

• hellish
• damnable

Meaning: Not able to produce offspring or yield crops.

Part of speech: adjective

Example: The soil in this area is infertile.

Category: Nature

Synonyms:

• barren
• sterile

Antonyms:

• fertile
• productive

Meaning: Material used to fill a space, especially in construction.

Part of speech: noun

Example: The infill was necessary to complete the building.

Category: Architecture

Synonyms:

• filling
• material

Meaning: To enter or gain access to an organization or place secretly.

Part of speech: verb

Example: The spy managed to infiltrate the enemy base.

Category: Security

Synonyms:

• penetrate
• sneak in

Antonyms: evacuate

Meaning: A term often used in mathematics to denote infinity.

Part of speech: noun

Example: In calculus, we often deal with infin.

Category: Mathematics

Synonyms: infinity

Meaning: Extremely small; almost zero.

Part of speech: adjective

Example: The changes in temperature were infinitesimal.

Category: Mathematics

Synonyms:

• tiny
• minuscule

Antonyms: huge

Meaning: A term used to denote infinity, often in philosophical contexts.

Part of speech: noun

Example: The concept of infinitum raises many questions.

Category: Philosophy

Synonyms: infinity

Meaning: Weak or ill, especially due to age.

Part of speech: adjective

Example: The infirm man needed assistance.

Category: Health

Synonyms:

• weak
• feeble

Antonyms: strong

Meaning: To provoke or intensify strong feelings.

Part of speech: verb

Example: The speech was meant to inflame the audience's emotions.

Category: Communication

Synonyms:

• agitate
• incite

Antonyms: calm

Meaning: Causing or likely to cause inflammation.

Part of speech: adjective

Example: The inflammatory response is part of the body's defense mechanism.

Category: Health

Synonyms:

• irritating
• provocative

Meaning: To change the form of a word to express different grammatical features.

Part of speech: verb

Example: In English, we inflect verbs to indicate tense.

Category: Grammar

Synonyms:

• modify
• change

Meaning: Having undergone inflection.

Part of speech: adjective

Example: The inflected form of the verb shows its tense.

Category: Grammar

Synonyms:

• changed
• modified

Meaning: The modification of a word to express different grammatical categories.

Part of speech: noun

Example: Inflection is important in understanding verb tenses.

Category: Grammar

Synonyms:

• modification
• change

Meaning: A change in the form of a word to express different grammatical features.

Part of speech: noun

Example: Inflexion is a key concept in linguistics.

Category: Grammar

Synonyms: inflection

Meaning: To cause something unpleasant to be suffered by someone.

Part of speech: verb

Example: They did not intend to inflict pain on anyone.

Category: Behavior

Synonyms:

• impose
• cause

Antonyms: relieve

Meaning: A term referring to the information superhighway, often used to describe the internet.

Part of speech: noun

Example: The infobahn has changed how we access information.

Category: Technology

Synonyms:

• internet
• web

Meaning: A person who provides information, often in a secretive manner.

Part of speech: noun

Example: The informant gave crucial details to the police.

Category: Law › Criminal Law

Synonyms:

• source
• tipster

Meaning: A person who informs or gives information, often secretly.

Part of speech: noun

Example: The informer provided key evidence to the investigation.

Category: Law › Criminal Law

Synonyms:

• whistleblower
• tipster

Meaning: Media that combines information and entertainment.

Part of speech: noun

Example: The show is a mix of news and infotainment.

Category: Media

Synonyms:

• edutainment
• news entertainment

Meaning: Relating to electromagnetic radiation with wavelengths longer than visible light.

Part of speech: adjective

Example: Infrared cameras can detect heat.

Category: Science

Synonyms: heat radiation

Meaning: To violate or go beyond the limits of something.

Part of speech: verb

Example: They did not want to infringe on anyone's rights.

Category: Law

Synonyms:

• violate
• breach

Antonyms: obey

Meaning: The action of violating or breaking a law or agreement.

Part of speech: noun

Example: The company faced legal action for copyright infringement.

Category: Law

Synonyms:

• violation
• breach

Meaning: To make someone extremely angry.

Part of speech: verb

Example: His rude comments infuriated her.

Category: Emotion

Synonyms:

• anger
• enrage

Antonyms: calm