Meaning: Not adequately prepared or supplied.

Part of speech: adjective

Example: The team was ill-equipped for the challenge.

Category: General

Synonyms:

• unprepared
• inadequate

Antonyms:

• well-equipped
• prepared

Meaning: Destined to fail or have bad luck.

Part of speech: adjective

Example: The ill-fated expedition ended in disaster.

Category: General

Synonyms:

• doomed
• unfortunate

Antonyms:

• fortunate
• lucky

Meaning: Not fitting properly; poorly sized.

Part of speech: adjective

Example: The ill-fitting shoes caused blisters.

Category: General

Synonyms:

• poorly fitting
• loose

Antonyms:

• well-fitting
• tight

Meaning: Based on false or mistaken ideas.

Part of speech: adjective

Example: His ill-founded beliefs were challenged.

Category: General

Synonyms:

• unfounded
• baseless

Antonyms:

• well-founded
• justified

Meaning: Money or benefits obtained through dishonest means.

Part of speech: phrase

Example: He was arrested for possessing ill-gotten gains.

Category: Law

Synonyms:

• ill-gotten wealth
• stolen money

Meaning: Not generous or broad-minded; narrow-minded.

Part of speech: adjective

Example: His illiberal views were criticized.

Category: Politics

Synonyms:

• narrow-minded
• bigoted

Antonyms:

• liberal
• open-minded

Meaning: Rude or impolite in behavior.

Part of speech: adjective

Example: His ill-mannered comments offended everyone.

Category: General

Synonyms:

• rude
• impolite

Antonyms:

• polite
• courteous

Meaning: Not making sense; unreasonable.

Part of speech: adjective

Example: His argument was illogical and hard to follow.

Category: General

Synonyms:

• irrational
• unreasonable

Antonyms:

• logical
• reasonable

Meaning: Not adequately prepared.

Part of speech: adjective

Example: The team was ill-prepared for the competition.

Category: General

Synonyms:

• unprepared
• inadequate

Antonyms:

• well-prepared
• ready

Meaning: A complicated and confusing situation.

Part of speech: noun

Example: The political imbroglio left many citizens confused.

Category: Politics

Synonyms:

• quagmire
• entanglement

Antonyms:

• solution
• clarity

Meaning: Existing or operating within; inherent.

Part of speech: adjective

Example: The immanent qualities of the artwork were appreciated by critics.

Category: Philosophy

Synonyms:

• inherent
• intrinsic

Antonyms:

• external
• extrinsic

Meaning: Too large or extreme to be measured.

Part of speech: adjective

Example: Her joy was immeasurable when she received the news.

Category: Science

Synonyms:

• infinite
• boundless

Antonyms:

• measurable
• finite

Meaning: In a way that cannot be measured; extremely.

Part of speech: adverb

Example: The landscape was immeasurably beautiful.

Category: Science

Synonyms:

• infinitely
• boundlessly

Antonyms:

• measurably
• finite

Meaning: Going back beyond memory or record.

Part of speech: adjective

Example: The tradition is of immemorial origin.

Category: History

Synonyms:

• ancient
• time-honored

Antonyms:

• modern
• recent

Meaning: Living forever; not subject to death.

Part of speech: adjective

Example: The myth spoke of an immortal being.

Category: Philosophy

Synonyms:

• eternal
• undying

Antonyms:

• mortal
• temporary

Meaning: Unchanging over time; unalterable.

Part of speech: adjective

Example: The laws of physics are considered immutable.

Category: Science

Synonyms:

• unchangeable
• fixed

Antonyms:

• changeable
• variable

Meaning: Not showing or feeling any emotion.

Part of speech: adjective

Example: His impassive face revealed nothing.

Category: Psychology

Synonyms:

• stoic
• unemotional

Antonyms:

• expressive
• emotional

Meaning: To charge a public official with misconduct.

Part of speech: verb

Example: The lawmakers voted to impeach the president.

Category: Law › Criminal Law

Synonyms:

• accuse
• charge

Antonyms:

• exonerate
• absolve

Meaning: The process of charging a public official with misconduct.

Part of speech: noun

Example: The impeachment of the governor was a historic event.

Category: Law › Criminal Law

Synonyms:

• accusation
• charge

Antonyms:

• exoneration
• absolution

Meaning: Having little or no money.

Part of speech: adjective

Example: He was an impecunious artist struggling to make ends meet.

Category: Economics

Synonyms:

• poor
• indigent

Antonyms:

• wealthy
• affluent

Meaning: To drive or urge someone to do something.

Part of speech: verb

Example: She felt impelled to speak out against injustice.

Category: Psychology

Synonyms:

• drive
• urge

Antonyms:

• deter
• discourage

Meaning: Impossible to pass through or enter.

Part of speech: adjective

Example: The forest was impenetrable due to thick underbrush.

Category: Nature

Synonyms:

• impossible
• inscrutable

Antonyms:

• permeable
• accessible

Meaning: Impossible to perceive; unnoticeable.

Part of speech: adjective

Example: The changes were so small they were imperceptible.

Category: Science

Synonyms:

• indiscernible
• invisible

Antonyms:

• noticeable
• obvious

Meaning: A policy of extending a country's power and influence through colonization or military force.

Part of speech: noun

Example: Imperialism has shaped many nations' histories.

Category: Politics

Synonyms:

• colonialism
• expansionism

Antonyms:

• decolonization
• independence

Meaning: A person who supports or practices imperialism.

Part of speech: noun

Example: The imperialist policies were criticized by many.

Category: Politics

Synonyms:

• colonialist
• expansionist

Antonyms:

• anti-imperialist
• independent

Meaning: Relating to or supporting imperialism.

Part of speech: adjective

Example: The imperialistic approach led to conflicts.

Category: Politics

Synonyms:

• expansionist
• colonial

Antonyms:

• anti-imperialist
• independent

Meaning: To put at risk or in danger.

Part of speech: verb

Example: The storm could imperil the safety of the residents.

Category: Nature

Synonyms:

• endanger
• jeopardize

Antonyms:

• protect
• safeguard

Meaning: Assuming power or authority without justification; arrogant.

Part of speech: adjective

Example: His imperious attitude annoyed his colleagues.

Category: Psychology

Synonyms:

• domineering
• overbearing

Antonyms:

• submissive
• humble

Meaning: Enduring forever; not subject to decay.

Part of speech: adjective

Example: Her imperishable love will last a lifetime.

Category: Philosophy

Synonyms:

• eternal
• everlasting

Antonyms:

• temporary
• transient

Meaning: To pretend to be someone else, often to deceive.

Part of speech: verb

Example: He tried to impersonate a police officer.

Category: Arts

Synonyms:

• imitate
• pretend

Antonyms:

• be oneself
• authentic

Meaning: Lack of respect; rudeness.

Part of speech: noun

Example: His impertinence was shocking to the guests.

Category: Communication

Synonyms:

• insolence
• rudeness

Antonyms:

• respect
• courtesy

Meaning: Rude and disrespectful.

Part of speech: adjective

Example: His impertinent remarks upset everyone.

Category: Communication

Synonyms:

• rude
• insolent

Antonyms:

• polite
• respectful

Meaning: Unable to be upset or excited; calm.

Part of speech: adjective

Example: She remained imperturbable during the crisis.

Category: Psychology

Synonyms:

• calm
• unflappable

Antonyms:

• nervous
• excitable

Meaning: Not allowing fluid to pass through; impenetrable.

Part of speech: adjective

Example: The coat is impervious to rain.

Category: Science

Synonyms:

• waterproof
• resistant

Antonyms:

• permeable
• vulnerable

Meaning: The quality of being impulsive or rash.

Part of speech: noun

Example: Her impetuosity often led to hasty decisions.

Category: Psychology

Synonyms:

• impulsiveness
• rashness

Antonyms:

• caution
• thoughtfulness

Meaning: Acting quickly and without thought; impulsive.

Part of speech: adjective

Example: His impetuous decision surprised everyone.

Category: Psychology

Synonyms:

• impulsive
• rash

Antonyms:

• cautious
• thoughtful

Meaning: A force that makes something happen or happen more quickly.

Part of speech: noun

Example: The new law gave impetus to the movement.

Category: Business

Synonyms:

• momentum
• drive

Antonyms:

• hindrance
• obstacle

Meaning: To have an effect or impact, especially a negative one.

Part of speech: verb

Example: The noise from the construction site impinged on her concentration.

Category: Science

Synonyms:

• affect
• infringe

Antonyms:

• ignore
• disregard

Meaning: Not showing respect or reverence, especially for a god.

Part of speech: adjective

Example: His impious remarks shocked the religious community.

Category: Religion

Synonyms:

• irreverent
• profane

Antonyms:

• pious
• devout

Meaning: Playfully mischievous.

Part of speech: adjective

Example: The impish child played pranks on his friends.

Category: Arts

Synonyms:

• mischievous
• playful

Antonyms:

• serious
• solemn