Meaning: Free or safe from injury or violation.

Part of speech: adjective

Example: The agreement remained inviolate despite the challenges.

Category: Law

Synonyms:

• untouched
• unbroken

Meaning: Unable to be seen; not visible.

Part of speech: adjective

Example: The invisible ink can only be seen under UV light.

Category: Science

Synonyms:

• unseen
• hidden

Antonyms: visible

Meaning: A written or verbal request to attend an event.

Part of speech: noun

Example: I received an invitation to the wedding.

Category: Social

Synonyms:

• request
• summons

Meaning: To ask someone to come to an event.

Part of speech: verb

Example: I will invite my friends to the party.

Category: Social

Synonyms:

• request
• summon

Meaning: Attractive or appealing; likely to draw interest.

Part of speech: adjective

Example: The inviting aroma of fresh bread filled the air.

Category: Food

Synonyms:

• appealing
• attractive

Meaning: The act of calling upon a deity or spirit for assistance.

Part of speech: noun

Example: The invocation was part of the ceremony.

Category: Religion

Synonyms:

• prayer
• appeal

Meaning: A document requesting payment for goods or services.

Part of speech: noun

Example: I received an invoice for the repairs.

Category: Business › Finance

Synonyms:

• bill
• statement

Meaning: To call upon a deity or spirit in prayer or as a witness.

Part of speech: verb

Example: They invoke the name of the saint for protection.

Category: Religion

Synonyms:

• call upon
• summon

Meaning: Done without will or conscious control.

Part of speech: adjective

Example: He had an involuntary reaction to the loud noise.

Category: Psychology

Synonyms:

• unintentional
• automatic

Meaning: To include or affect someone or something.

Part of speech: verb

Example: The project will involve many different departments.

Category: Business

Synonyms:

• include
• entail

Meaning: Being a part of something; complicated or intricate.

Part of speech: adjective

Example: The process is more involved than I expected.

Category: Business

Synonyms:

• complicated
• engaged

Meaning: The act of participating in something.

Part of speech: noun

Example: Her involvement in the community project was commendable.

Category: Social

Synonyms:

• participation
• engagement

Meaning: Incapable of being wounded, hurt, or damaged.

Part of speech: adjective

Example: The superhero seemed invulnerable to all attacks.

Category: Literature

Synonyms:

• impervious
• unassailable

Meaning: Directed or moving toward the inside; internal.

Part of speech: adjective

Example: She took an inward look at her feelings.

Category: Psychology

Synonyms:

• internal
• inner

Meaning: Investment made by a company or individual into the economy of their own country.

Part of speech: noun

Example: The government encourages inward investment to boost the economy.

Category: Business › Finance

Synonyms:

• domestic investment
• local investment

Meaning: Focusing on internal matters rather than external factors.

Part of speech: adjective

Example: The company's inward-looking approach limited its growth.

Category: Business

Synonyms:

• insular
• self-focused

Meaning: Towards the inside or center.

Part of speech: adverb

Example: She turned her gaze inwards to reflect on her thoughts.

Category: Psychology

Synonyms:

• inwardly
• internally

Meaning: Aggressively bold or confrontational.

Part of speech: adjective

Example: The in-your-face advertising campaign caught everyone's attention.

Category: Marketing

Synonyms:

• confrontational
• bold

Meaning: A chemical element used in medicine and photography.

Part of speech: noun

Example: Iodine is often used as a disinfectant.

Category: Science › Chemistry

Synonyms:

• element
• chemical

Meaning: A suffix used to form nouns indicating an action or condition.

Part of speech: suffix

Example: The word 'creation' uses the suffix -ion.

Category: Language

Synonyms: suffix

Meaning: An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Part of speech: noun

Example: An ion can be positively or negatively charged.

Category: Science › Chemistry

Synonyms:

• charged particle
• atom

Meaning: A device that converts atoms or molecules into ions.

Part of speech: noun

Example: An ionizer can improve air quality.

Category: Technology

Synonyms:

• ion generator
• ion machine

Meaning: A very small amount; a bit.

Part of speech: noun

Example: There isn't an iota of doubt in my mind.

Category: Language

Synonyms:

• bit
• smidgen

Meaning: A written acknowledgment of a debt.

Part of speech: noun

Example: He gave me an IOU for the money he borrowed.

Category: Finance

Synonyms:

• debt acknowledgment
• promissory note

Meaning: A unique string of numbers separated by periods that identifies each computer using the Internet Protocol to communicate over a network.

Part of speech: noun

Example: Every device connected to the internet has an IP address.

Category: Technology › Networking

Synonyms:

• internet address
• network address

Meaning: A portable media player designed by Apple Inc.

Part of speech: noun

Example: I listen to music on my iPod.

Category: Technology › Consumer Electronics

Synonyms:

• media player
• music player

Meaning: By that very fact or act.

Part of speech: adverb

Example: He was, ipso facto, the leader of the group.

Category: Law

Synonyms:

• therefore
• consequently

Meaning: A measure of a person's intelligence as indicated by an intelligence test.

Part of speech: noun

Example: Her IQ is above average.

Category: Psychology

Synonyms:

• intelligence quotient
• intelligence measure

Meaning: A prefix meaning 'not' or 'opposite of'.

Part of speech: prefix

Example: The prefix 'ir-' is used in words like 'irregular'.

Category: Language

Synonyms: prefix

Meaning: Relating to Iran or its people.

Part of speech: adjective

Example: The Iranian culture is rich and diverse.

Category: Geography

Synonyms: Persian

Meaning: Relating to Iraq or its people.

Part of speech: adjective

Example: Iraqi cuisine is known for its rich flavors.

Category: Geography

Synonyms: Arab

Meaning: Easily provoked to anger; irritable.

Part of speech: adjective

Example: His irascible nature made him difficult to work with.

Category: Psychology

Synonyms:

• irritable
• testy

Meaning: Feeling or characterized by great anger.

Part of speech: adjective

Example: The irate customer demanded a refund.

Category: Social

Synonyms:

• angry
• furious

Meaning: Internet Relay Chat, a protocol for real-time internet chat.

Part of speech: noun

Example: Many people use IRC for group discussions.

Category: Technology › Communication

Synonyms:

• chat protocol
• communication tool

Meaning: Intense anger; rage.

Part of speech: noun

Example: His ire was evident when he heard the news.

Category: Emotion

Synonyms:

• anger
• fury

Meaning: Showing luminous colors that seem to change when seen from different angles.

Part of speech: adjective

Example: The iridescent surface of the soap bubble was beautiful.

Category: Science › Optics

Synonyms:

• shimmering
• rainbow-colored

Meaning: The colored part of the eye that controls the size of the pupil.

Part of speech: noun

Example: Her iris was a striking shade of green.

Category: Biology

Synonyms:

• eye color
• pupil control

Meaning: Relating to Ireland or its people.

Part of speech: adjective

Example: Irish music is known for its lively rhythms.

Category: Geography

Synonyms: Celtic

Meaning: A man from Ireland.

Part of speech: noun

Example: The Irishman shared stories of his homeland.

Category: Geography

Synonyms: Irish person

Meaning: To annoy or irritate someone.

Part of speech: verb

Example: His constant interruptions began to irk her.

Category: Social

Synonyms:

• annoy
• irritate