un·​of·​fi·​cial | \ ˌən-ə-ˈfi-shəl also -ō- How to pronounce unofficial (audio) \

Definition of unofficial

: not authorized or acknowledged by a government, group, class, or society : not official unofficial results an unofficial policy

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Other Words from unofficial

unofficially adverb

Examples of unofficial in a Sentence

Recent Examples on the Web

In 2018 and 2019, the Wolverines have hosted a mix of official and unofficial visitors during the second-to-last weekend in June. Detroit Free Press, "Michigan football's June recruiting strategy pays off," 23 June 2019 The actor, 54, is handsome, funny, humble and self-deprecating in both his official and unofficial public appearances. Martha Ross, The Mercury News, "Keanu Reeves’ Emeryville adventure: Digging ‘deep’ into the soul of his ‘Toy Story’ role," 18 June 2019 Combined, the many official and unofficial positive aspects of working at BRG Apartments led to the Cincinnati Enquirer naming the company as one of the area’s Top Workplaces. Jessica Levy,, "BRG Apartments creates quality communities, strives to be a good neighbor," 7 June 2019 Other conferences have similar policies, either official or unofficial. Jessica Smetana,, "How Mad Should Notre Dame Fans Be About Bye Weeks?," 4 June 2019 After doing some easy (and unofficial) math, the truth is even better: More than half of the runway shows held as a part of MBFWA’s official schedule featured female designers, with 18 out of 29 shows helmed by at least one woman. Steff Yotka, Vogue, "Swim, Sunnies, and Sustainability—What’s Up at Sydney’s Annual Resort Fashion Week," 21 May 2019 As a corrective, Grandin’s book balloons into a short history of the United States, with an emphasis on the racial terror, official and unofficial, that marked the story from the start. Christopher Tayler, Harper's magazine, "New Books," 10 Mar. 2019 Her daughter, 10 when Harry first arrived, gave the bird his unofficial name. Vinny Vella,, "In Malvern, 'Harry the Peacock' has found a home," 4 June 2018 Beverly plans to attend two camps in Columbus this summer and has already taken an unofficial visit this spring. Stephen Means,, "Potential in-state quarterback connections for Ohio State football: Jeffery Beverly," 13 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unofficial.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unofficial

1784, in the meaning defined above

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Statistics for unofficial

Last Updated

4 Jul 2019

Look-up Popularity

Time Traveler for unofficial

The first known use of unofficial was in 1784

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More Definitions for unofficial



English Language Learners Definition of unofficial

: not formally chosen by an official decision or vote
: not done or made in a formal way by someone in a position of authority
: not having the authority to make a statement, decision, etc.


un·​of·​fi·​cial | \ ˌən-ə-ˈfi-shəl\

Kids Definition of unofficial

: not official

Other Words from unofficial

unofficially adverb


un·​of·​fi·​cial | \ ˌən-ə-ˈfish-əl How to pronounce unofficial (audio) \

Medical Definition of unofficial

: not official specifically : of, relating to, or being a drug not described in the United States Pharmacopeia and National Formulary — compare nonofficial, official

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More from Merriam-Webster on unofficial

Rhyming Dictionary: Words that rhyme with unofficial

Spanish Central: Translation of unofficial

Nglish: Translation of unofficial for Spanish Speakers

Britannica English: Translation of unofficial for Arabic Speakers

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