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Definition of informal

informal

/ɪnˈfɔːr.məl/
in · for · mal
Adverb:informally
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informal Lexical Profile

informal Game Scores & Validity

• adjective

1

Having a relaxed, friendly, or unofficial style, manner, or nature; not bound by strict rules or ceremonies.

Example

"The team held an informal meeting over coffee to brainstorm ideas for the upcoming project."

2

Denoting the grammatical structures, vocabulary, and idiom suitable for everyday conversation rather than official or academic contexts.

Example

"Contractions and slang are common features of informal spoken English."

3

(of clothing) Suitable for everyday wear rather than formal or ceremonial occasions.

Example

"Guests were encouraged to wear informal attire to the outdoor summer barbecue."

Synonyms
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Antonyms
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• Rhymes for informal

• Nearby Words

infographic
infomercial
inform
informal
informality
informally
informant

Word Origin & Etymology

From Late Middle English, borrowed from Late Latin informalis ('formless, irregular'), from in- ('not') + formalis ('having a set form').

Cite this Entry

Wordmom. (2026). Definition of Informal. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/informal
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