informal

adjective

in·​for·​mal (ˌ)in-ˈfȯr-məl How to pronounce informal (audio)
Synonyms of informalnext
1
: marked by the absence of formality or ceremony
an informal meeting
2
: characteristic of or appropriate to ordinary, casual, or familiar use
informal clothes
informality noun
informally adverb

Examples of informal in a Sentence

We had an informal meeting over lunch. He has an informal manner that puts people at ease. He spoke to them in informal Spanish. The term is common in informal contexts. He took an informal poll among his coworkers.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The policy at the center of the case began as an informal practice at the tail end of the Obama administration, when immigration officers at the San Ysidro Port of Entry dealt with a large influx of Haitian asylum seekers by turning them away when the officers deemed the port to be at capacity. Alex Riggins, San Diego Union-Tribune, 23 Mar. 2026 The nightclub’s reputation developed through informal athlete associations, hip-hop references and social media storytelling. Rick Burton, Sportico.com, 21 Mar. 2026 In many other states, senior living communities can allow residents to drink alcohol or host informal social hours, though policies vary widely. Deirdre Bardolf, FOXNews.com, 21 Mar. 2026 By the time Kennedy launched his presidential campaign in 1960, Hyannis Port had become the informal nerve center of the family’s political operation. Abby Montanez, Robb Report, 20 Mar. 2026 See All Example Sentences for informal

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of informal was in the 15th century

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Cite this Entry

“Informal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/informal. Accessed 26 Mar. 2026.

Kids Definition

informal

adjective
in·​for·​mal (ˈ)in-ˈfȯr-məl How to pronounce informal (audio)
1
: not formal
an informal party
2
: suited for ordinary or everyday use
informal clothes
informality noun
informally adverb

Legal Definition

informal

adjective
in·​for·​mal
: marked by the absence of required forms or procedures or by the relaxation of prescribed rules
an informal hearing

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