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
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The physical locations of their retail spaces further this idea: Miron Crosby’s flagship studio is located in Dallas’s ritzy Highland Park Village, and another is in Aspen, Colorado, unofficial home of the jet set. Perrie Samotin, Glamour, 14 Mar. 2025 Several citizens have formed groups to carry out their own unofficial sting operations, which often involve a member of the group posing as a decoy minor. Julia Marnin, Miami Herald, 14 Mar. 2025 Now, according to the outlet, the building has been renamed and repurposed to Bell Works, and serves as a tourist attraction and unofficial town square, that includes an indoor promenade with shops and a food court. Jordana Comiter, People.com, 14 Mar. 2025 Dubbed the unofficial fifth major championship, most of the best players in the world are in the field. Raja Krishnamoorthi, Newsweek, 13 Mar. 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 20 Mar. 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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