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.
The Giants are looking to finish the unofficial first half of the season on a high note as Robbie Ray takes on Yoshinobu Yamamoto. Michael Nowels, Mercury News, 13 July 2025 And now Boyd might be among the more underrated offseason moves in the majors based on the results of the unofficial first half. Larry Fleisher, Forbes.com, 13 July 2025 That gets to the unofficial Rule 4: Don't wear your work uniform or hat in your car. Jasmine Garsd, NPR, 12 July 2025 Galaxy’s Edge and Rise of the Resistance already released on the streaming service on May 4 in honor of the unofficial Star Wars holiday. Brady MacDonald, Oc Register, 11 July 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 Jul. 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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