Meaning: Causing great anger or frustration.

Part of speech: adjective

Example: The infuriating delay made everyone late.

Category: Emotion

Synonyms:

• annoying
• irritating

Meaning: To fill something with a quality or feeling.

Part of speech: verb

Example: The teacher aimed to infuse enthusiasm into her students.

Category: Education

Synonyms:

• instill
• inject

Meaning: The process of steeping a substance in a liquid to extract flavors or qualities.

Part of speech: noun

Example: The infusion of herbs created a delicious tea.

Category: Food

Synonyms:

• brewing
• steeping

Meaning: An innocent or unsophisticated young woman, especially in film or theater.

Part of speech: noun

Example: She played the ingenue in the romantic film.

Category: Arts

Synonyms:

• naive
• innocent

Meaning: Not deserving or bringing glory; shameful.

Part of speech: adjective

Example: His inglorious defeat was a lesson learned.

Category: Character

Synonyms:

• shameful
• dishonorable

Antonyms: glorious

Meaning: A block of metal, typically gold or silver, that is cast in a specific shape.

Part of speech: noun

Example: The bank stored ingots of gold in its vault.

Category: Manufacturing

Synonyms:

• bar
• block

Meaning: Firmly fixed or established; deeply rooted.

Part of speech: adjective

Example: His ingrained habits were hard to change.

Category: Behavior

Synonyms:

• deep-rooted
• entrenched

Meaning: To bring oneself into favor with someone by flattering or trying to please them.

Part of speech: verb

Example: He tried to ingratiate himself with his boss.

Category: Behavior

Synonyms:

• flatter
• ingratiating

Meaning: Intended to gain approval or favor; flattering.

Part of speech: adjective

Example: Her ingratiating smile made a good impression.

Category: Behavior

Synonyms:

• flattering
• obsequious

Meaning: A lack of gratitude; ungratefulness.

Part of speech: noun

Example: His ingratitude was surprising after all she had done for him.

Category: Emotion

Synonyms:

• ungratefulness
• thanklessness

Antonyms: gratitude

Meaning: Growing into the skin, often referring to hair or nails.

Part of speech: adjective

Example: An ingrown toenail can be quite painful.

Category: Health

Synonyms:

• embedded
• buried

Meaning: A tax imposed on the value of an inheritance.

Part of speech: noun

Example: Inheritance tax can significantly reduce the amount received.

Category: Law › Tax Law

Synonyms: estate tax

Meaning: Lacking compassion or kindness.

Part of speech: adjective

Example: The inhuman treatment of prisoners was condemned.

Synonyms:

• cruel
• brutal

Antonyms:

• humane
• kind

Meaning: The quality of being cruel or lacking compassion.

Part of speech: noun

Example: The inhumanity of war is often highlighted in literature.

Category: Ethics

Synonyms:

• cruelty
• barbarity

Antonyms:

• humanity
• compassion

Meaning: Hostile or unfriendly.

Part of speech: adjective

Example: The inimical forces worked against the peace treaty.

Synonyms:

• hostile
• unfriendly

Antonyms:

• friendly
• beneficial

Meaning: Immoral or grossly unfair.

Part of speech: adjective

Example: The iniquitous laws were challenged in court.

Category: Law

Synonyms:

• wicked
• unjust

Antonyms:

• just
• fair

Meaning: Immoral or grossly unfair behavior.

Part of speech: noun

Example: The iniquity of the system was evident.

Category: Ethics

Synonyms:

• wickedness
• immorality

Antonyms:

• virtue
• goodness

Meaning: Showing a lack of judgment or sense.

Part of speech: adjective

Example: His injudicious comments caused a lot of trouble.

Category: General

Synonyms:

• unwise
• foolish

Antonyms:

• wise
• judicious

Meaning: A person who has suffered harm or damage.

Part of speech: noun

Example: The injured party filed a complaint.

Category: Law

Synonyms:

• victim
• claimant

Antonyms:

• perpetrator
• offender

Meaning: Dark or black like ink.

Part of speech: adjective

Example: The sky was inky black at night.

Category: Arts

Synonyms:

• dark
• black

Antonyms:

• light
• bright

Meaning: Most intimate or secret.

Part of speech: adjective

Example: She shared her inmost thoughts with her best friend.

Category: General

Synonyms:

• deepest
• innermost

Antonyms:

• outer
• superficial

Meaning: The internal organs of a body.

Part of speech: noun

Example: The chef prepared the innards for the dish.

Category: Biology

Synonyms:

• guts
• entrails

Meaning: The childlike aspect of a person's personality.

Part of speech: noun

Example: She often connects with her inner child through art.

Category: Psychology

Synonyms:

• childlike self
• youthful spirit

Meaning: Most private or secret.

Part of speech: adjective

Example: He revealed his innermost thoughts to her.

Category: General

Synonyms:

• deepest
• most private

Antonyms:

• outer
• superficial

Meaning: An indirect or subtle reference, often of a derogatory nature.

Part of speech: noun

Example: His comments were filled with innuendo.

Category: Language

Synonyms:

• insinuation
• hint

Antonyms:

• direct statement
• clarity

Meaning: Not able to be operated on or treated surgically.

Part of speech: adjective

Example: The tumor was found to be inoperable.

Category: Medicine

Synonyms:

• untreatable
• incurable

Antonyms:

• operable
• treatable

Meaning: Occurring at an inconvenient or inappropriate time.

Part of speech: adjective

Example: His call came at an inopportune moment.

Category: General

Synonyms:

• untimely
• inconvenient

Antonyms:

• timely
• opportune

Meaning: Exceeding reasonable limits; excessive.

Part of speech: adjective

Example: He spent an inordinate amount of time on the project.

Category: General

Synonyms:

• excessive
• immoderate

Antonyms:

• moderate
• reasonable

Meaning: Relating to an inquiry or investigation, especially one that is thorough.

Part of speech: adjective

Example: The inquisitorial process was designed to uncover the truth.

Category: Law

Synonyms:

• investigative
• interrogative

Antonyms:

• defensive
• protective

Meaning: A state of mental illness or disorder.

Part of speech: noun

Example: The court ruled that he was not guilty by reason of insanity.

Synonyms:

• madness
• lunacy

Antonyms:

• sanity
• rationality

Meaning: Difficult to understand or interpret.

Part of speech: adjective

Example: His inscrutable expression made it hard to know what he was thinking.

Category: Literature

Synonyms:

• enigmatic
• mysterious

Antonyms:

• clear
• obvious

Meaning: To introduce sperm into a female's reproductive system.

Part of speech: verb

Example: The veterinarian will inseminate the cow.

Category: Medicine

Synonyms:

• impregnate
• fertilize

Antonyms:

• sterilize
• prevent

Meaning: Proceeding in a gradual, subtle way but with harmful effects.

Part of speech: adjective

Example: The insidious disease spread without any noticeable symptoms.

Category: Health

Synonyms:

• sly
• treacherous

Antonyms:

• harmless
• safe

Meaning: A badge or emblem indicating membership or rank.

Part of speech: noun

Example: The insignia on his uniform showed he was a captain.

Category: Arts

Synonyms:

• emblem
• badge

Antonyms:

• plainness
• simplicity

Meaning: The quality of being unimportant or trivial.

Part of speech: noun

Example: He felt a sense of insignificance in the large crowd.

Category: Philosophy

Synonyms:

• triviality
• unimportance

Antonyms:

• significance
• importance

Meaning: Suggesting or hinting at something in a sly or indirect way.

Part of speech: adjective

Example: Her insinuating tone made him uncomfortable.

Category: Communication

Synonyms:

• suggestive
• implying

Antonyms:

• direct
• clear

Meaning: To the extent that; as far as.

Part of speech: phrase

Example: Insofar as I know, the meeting is still on.

Category: Communication

Synonyms:

• to the extent
• as far as

Meaning: Showing a rude and arrogant lack of respect.

Part of speech: adjective

Example: His insolent behavior got him in trouble.

Category: Communication

Synonyms:

• rude
• impudent

Antonyms:

• respectful
• polite

Meaning: Incapable of being solved or explained.

Part of speech: adjective

Example: The problem seemed insoluble.

Category: Mathematics

Synonyms:

• unsolvable
• irresolvable

Antonyms:

• solvable
• resolvable

Meaning: The state of being unable to pay debts.

Part of speech: noun

Example: The company's insolvency led to bankruptcy.

Category: Business › Finance

Synonyms:

• bankruptcy
• failure

Antonyms:

• solvency
• wealth