Meaning: Unable to pay debts; bankrupt.

Part of speech: adjective

Example: The insolvent company was forced to close.

Category: Business

Synonyms:

• bankrupt
• broke

Antonyms:

• solvent
• wealthy

Meaning: A person who suffers from insomnia.

Part of speech: noun

Example: As an insomniac, he often struggles to stay awake during the day.

Category: Health

Synonyms:

• sleepless person
• night owl

Antonyms:

• sleeper
• rested person

Meaning: Casual lack of concern; indifference.

Part of speech: noun

Example: His insouciance about the deadline surprised everyone.

Category: Psychology

Synonyms:

• carelessness
• indifference

Antonyms:

• concern
• worry

Meaning: Showing a casual lack of concern; indifferent.

Part of speech: adjective

Example: His insouciant attitude made him popular among friends.

Category: Psychology

Synonyms:

• carefree
• unconcerned

Antonyms:

• worried
• concerned

Meaning: A person who initiates or provokes an action or event.

Part of speech: noun

Example: He was seen as the instigator of the conflict.

Category: Politics

Synonyms:

• provoker
• inciter

Antonyms:

• peacemaker
• mediator

Meaning: Relating to instinct; automatic or natural behavior.

Part of speech: adjective

Example: The instinctual response to danger is to flee.

Category: Biology

Synonyms:

• innate
• natural

Antonyms:

• learned
• acquired

Meaning: Relating to an institution, especially in terms of its structure or organization.

Part of speech: adjective

Example: The institutional framework supports education.

Category: Education

Synonyms:

• organizational
• structural

Antonyms:

• individual
• personal

Meaning: To establish something as a norm or standard within an organization or culture.

Part of speech: verb

Example: They aim to institutionalize best practices in the workplace.

Category: Education

Synonyms:

• establish
• normalize

Antonyms:

• abolish
• disband

Meaning: the arrangement of instruments in a piece of music

Part of speech: noun

Example: The instrumentation of the symphony was complex.

Synonyms:

• arrangement
• equipment

Meaning: refusal to obey orders from a superior

Part of speech: noun

Example: His insubordination led to disciplinary action.

Category: Business

Synonyms:

• disobedience
• defiance

Antonyms:

• obedience
• compliance

Meaning: not solid or strong

Part of speech: adjective

Example: The evidence was deemed insubstantial.

Category: Science

Synonyms:

• weak
• fragile

Antonyms:

• substantial
• strong

Meaning: too extreme to bear

Part of speech: adjective

Example: His insufferable arrogance annoyed everyone.

Category: Arts

Synonyms:

• unbearable
• intolerable

Antonyms:

• tolerable
• bearable

Meaning: ignorant of or uninterested in cultures, ideas, or peoples outside one's own

Part of speech: adjective

Example: His insular views limited his understanding of the world.

Category: Culture

Synonyms:

• narrow-minded
• provincial

Antonyms:

• open-minded
• broad-minded

Meaning: impossible to overcome

Part of speech: adjective

Example: They faced insuperable challenges during the project.

Category: General

Synonyms:

• insurmountable
• unconquerable

Antonyms:

• surmountable
• overcomable

Meaning: not able to be supported or justified

Part of speech: adjective

Example: The insupportable conditions led to protests.

Category: Social

Synonyms:

• unacceptable
• intolerable

Antonyms:

• acceptable
• tolerable

Meaning: a person who evaluates insurance claims

Part of speech: noun

Example: The insurance adjuster assessed the damage after the accident.

Category: Business › Finance

Synonyms:

• claims adjuster
• appraiser

Meaning: an active revolt or uprising

Part of speech: noun

Example: The insurgency caused significant political unrest.

Category: Politics

Synonyms:

• rebellion
• uprising

Antonyms:

• compliance
• submission

Meaning: a person who rises in revolt against an established authority

Part of speech: noun

Example: The insurgent group demanded change.

Category: Politics

Synonyms:

• rebel
• revolutionary

Antonyms:

• loyalist
• supporter

Meaning: too great to be overcome

Part of speech: adjective

Example: They faced insurmountable odds in the competition.

Category: General

Synonyms:

• insuperable
• unconquerable

Antonyms:

• surmountable
• overcomable

Meaning: a violent uprising against an authority

Part of speech: noun

Example: The insurrection led to significant changes in government.

Category: Politics

Synonyms:

• rebellion
• revolt

Antonyms:

• compliance
• obedience

Meaning: to think about or explain something in a logical way

Part of speech: verb

Example: He tends to intellectualize his feelings.

Category: General

Synonyms:

• rationalize
• analyze

Antonyms:

• emotionalize
• simplify

Meaning: the intellectual elite of a society

Part of speech: noun

Example: The intelligentsia often influences cultural trends.

Category: Culture

Synonyms:

• intellectuals
• elite

Antonyms:

• ignorant
• uneducated

Meaning: having or showing a lack of moderation

Part of speech: adjective

Example: His intemperate remarks caused a scandal.

Category: General

Synonyms:

• excessive
• immoderate

Antonyms:

• moderate
• temperate

Meaning: a word or phrase that strengthens meaning

Part of speech: noun

Example: In the sentence, 'very' is an intensifier.

Category: Language

Synonyms:

• emphasizer
• strengthener

Antonyms:

• diminisher
• weakener

Meaning: to place a dead body in a grave

Part of speech: verb

Example: They will inter the remains in the cemetery.

Category: General

Synonyms:

• bury
• entomb

Antonyms:

• exhume
• disinter

Meaning: among other things

Part of speech: phrase

Example: The report discusses, inter alia, the need for better training.

Category: Law

Meaning: to intervene on behalf of someone

Part of speech: verb

Example: She decided to intercede in the argument.

Category: Social

Synonyms:

• intervene
• mediate

Antonyms:

• ignore
• neglect

Meaning: a vehicle or device designed to intercept

Part of speech: noun

Example: The interceptor was deployed to stop the threat.

Category: Technology

Synonyms:

• catcher
• stopper

Meaning: the act of intervening on behalf of another

Part of speech: noun

Example: His intercession helped resolve the conflict.

Category: Social

Synonyms:

• intervention
• mediation

Antonyms:

• neglect
• indifference

Meaning: communication or dealings between individuals or groups

Part of speech: noun

Example: There was little intercourse between the two communities.

Category: Social

Synonyms:

• interaction
• communication

Antonyms:

• isolation
• separation

Meaning: to alternate between two or more scenes in a film

Part of speech: verb

Example: The director decided to intercut between the two storylines.

Category: Arts › Film

Synonyms:

• alternate
• switch

Meaning: Destructive to both sides in a conflict.

Part of speech: adjective

Example: The internecine struggle weakened both factions.

Category: Politics

Synonyms: mutually destructive

Meaning: A period of time when normal government is suspended.

Part of speech: noun

Example: The country experienced an interregnum after the revolution.

Category: Politics

Synonyms:

• interval
• break

Meaning: Existing or occurring between stars.

Part of speech: adjective

Example: The interstellar space is vast and mostly empty.

Category: Science › Astronomy

Synonyms:

• cosmic
• galactic

Meaning: A hint or suggestion.

Part of speech: noun

Example: She gave an intimation of her plans.

Category: Arts › Communication

Synonyms:

• hint
• suggestion

Meaning: To say or recite in a monotone voice.

Part of speech: verb

Example: He began to intone the poem dramatically.

Category: Language › Phonetics

Synonyms:

• recite
• chant

Meaning: Causing a feeling of excitement or euphoria.

Part of speech: adjective

Example: The intoxicating aroma of the flowers filled the room.

Category: Health › Substance Use

Synonyms:

• exciting
• thrilling

Antonyms:

• boring
• dull

Meaning: Difficult to manage or control.

Part of speech: adjective

Example: The intractable problem required expert advice.

Category: General

Synonyms:

• unmanageable
• stubborn

Antonyms:

• manageable
• compliant

Meaning: Refusal to change one's views or opinions.

Part of speech: noun

Example: His intransigence led to a breakdown in negotiations.

Category: Politics

Synonyms:

• stubbornness
• obstinacy

Antonyms:

• flexibility
• compromise

Meaning: Unwilling to change one's views or opinions.

Part of speech: adjective

Example: The intransigent negotiator refused to make any concessions.

Category: Politics

Synonyms:

• unyielding
• stubborn

Antonyms:

• flexible
• yielding