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 Textured denim and loose-fitting jeans were the unofficial dress code for the 2024 Nickelodeon Kids’ Choice Awards held in Los Angeles on Saturday. Angela Velasquez, Sourcing Journal, 15 July 2024 Perry’s subsequent albums became a sort of unofficial soundtrack to Obama’s presidency and the pop culture of the 2010s. Mathew Rodriguez, Them, 15 July 2024 As with any kind of convention, there’s lots of networking and unofficial business. Anthony Man, Sun Sentinel, 14 July 2024 This unofficial constellation is called the Summer Triangle. Dean Regas, The Enquirer, 13 July 2024 See all Example Sentences for unofficial 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'unofficial.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1784, in the meaning defined above

Time Traveler
The first known use of unofficial was in 1784

Dictionary Entries Near unofficial

Cite this Entry

“Unofficial.” Dictionary, Merriam-Webster, Accessed 23 Jul. 2024.

Medical Definition


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
Last Updated: - Updated example sentences
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