unofficial

adjective

un·​of·​fi·​cial ˌən-ə-ˈfi-shəl How to pronounce unofficial (audio)
 also  -ō-
: not authorized or acknowledged by a government, group, class, or society : not official
unofficial results
an unofficial policy
unofficially adverb

Examples of unofficial in a Sentence

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.
In unofficial results, Ciesla won re-election with 52.7% of the ballots, while challenger Josha Kaplan received 47.3%. Phil Rockrohr, Chicago Tribune, 8 Apr. 2025 By Sally French, NerdWallet Memorial Day marks the unofficial beginning of summer in the U.S., but the days leading up to it tend to bring the biggest airport crowds. Nerdwallet, Mercury News, 7 Apr. 2025 As of writing, there’s unofficial statement from Buckingham Palace confirming that William and Kate took in another dog. Jason Pham, StyleCaster, 7 Apr. 2025 An unofficial sampling of the jerseys in the crowd suggested a ratio of about one Chapman jersey for each bobblehead. Grant Brisbee, New York Times, 6 Apr. 2025 See All Example Sentences for unofficial

Word History

First Known Use

1784, in the meaning defined above

Time Traveler
The first known use of unofficial was in 1784

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Cite this Entry

“Unofficial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unofficial. Accessed 19 Apr. 2025.

Medical Definition

unofficial

adjective
un·​of·​fi·​cial ˌən-ə-ˈfish-əl How to pronounce unofficial (audio)
: not official
specifically : of, relating to, or being a drug not described in the United States Pharmacopeia and National Formulary compare nonofficial, official

More from Merriam-Webster on unofficial

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