informal

adjective

in·​for·​mal (ˌ)in-ˈfȯr-məl How to pronounce informal (audio)
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.
After an informal question and answer session with several representatives from TCEQ, more than a dozen people stepped to the microphone to deliver comments on the proposal. Fort Worth Star-Telegram, 31 Oct. 2025 It’s supported education for refugee children, clean water and sanitation, livelihoods for informal waste pickers and funded factory decarbonization initiatives. Jasmin Malik Chua, Sourcing Journal, 31 Oct. 2025 Just like with StreamOnce, Zeev’s involvement with Navan started with an informal meeting, a quick decision, and an early check. Michal Lev-Ram, Cnbc Contributor, CNBC, 30 Oct. 2025 Vargas floated groups of migrants across the informal border crossing between Guatemala and Mexico on a makeshift raft made from wooden boards lashed to fat inner tubes. Daniel Gonzalez, AZCentral.com, 29 Oct. 2025 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

Browse Nearby Words

Cite this Entry

“Informal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/informal. Accessed 2 Nov. 2025.

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

More from Merriam-Webster on informal

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