INFORMAL Synonyms: 85 Similar and Opposite Words

informal

adjective

(ˌ)in-ˈfȯr-məl

Definition of informal

as in unconventional

not rigidly following established form, custom, or rules an informal meeting allowed everyone to get acquainted

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in casual

not designed to be worn only on special occasions chose an informal flowery dress

Synonyms & Similar Words

Antonyms & Near Antonyms

as in colloquial

used in or suitable for speech and not formal writing the use of informal language in a scholarly article is really inappropriate

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Antonyms & Near Antonyms

Example Sentences

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Recent Examples of informal Comparative data on long prison terms is thin, but there is consensus, if informal, that Smith has the American record. — Edmund H. Mahony, Hartford Courant, 19 July 2026 The poor air quality, which is dangerous for both players and fans, led FIFA and the White House to hold informal discussions over moving the World Cup final. — Kevin Baxter, Los Angeles Times, 18 July 2026 For the dozens of NHL, minor league and college players who make their off-season homes in Minnesota, informal morning skates at various arenas throughout the Twin Cities have been going on for decades. — Jess Myers, Twin Cities, 17 July 2026 That follows informal discussions between FIFA and World Cup task force CEO Andrew Giuliani over the matter. — Leon Imber, New York Times, 17 July 2026 See All Example Sentences for informal

Recent Examples of Synonyms for informal

Adjective

The result is one of the most unconventional short courses in the game.

— Erik Matuszewski, Forbes.com, 31 July 2026
Once considered unprofessional or unconventional in some settings, tattoos have become far more accepted across generations.

— Rachel Brown Kirkland, AJC.com, 30 July 2026

Definition of unconventional

Adjective

Screenplay credits are shared by Damodaran, Joses Imona, and Jennifer Litau, with Litau also handling Tok Pisin and vernacular-language translation duties.

— Naman Ramachandran, Variety, 17 July 2026
Compiled in 1964 by Elektra Records founder Jac Holzman, this four-LP, 83-track box set was intended as an accessible survey of the roots and branches of American vernacular music.

— Ted Olson, The Conversation, 2 July 2026