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.
And who could ever forget the kids from Our Lady of Mount Carmel Academy, who held a mini conclave of their own, then were invited to Rome for an informal meet and greet with the holy father. CBS News, 8 May 2026 An informal online poll conducted by NBC4-LA showed that 89% of respondents thought that Pratt won the debate. Maxwell Adler, Vanity Fair, 7 May 2026 The pair of town hall meetings hosted by law firms operating under the name PFAS Georgia turned out nearly 1,000 people and served as an informal campaign stop for about a dozen political candidates — a nod to the grassroots outrage over the topic. Dylan Jackson, ABC News, 6 May 2026 If that window closes without agreement, an informal arbitration process commences — conducted under WGA auspices, conducted by phone, and conducted fast. George Heller, HollywoodReporter, 6 May 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 12 May. 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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