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

Today, people who want to visit the company sometimes end up at the unofficial headquarters, Mr. Sijbrandij’s two-bedroom loft in the city’s trendy SoMa neighborhood, where the dining room doubles as a videoconferencing center. Agam Shah, WSJ, "The Office of the Future Is No Office at All, Says Startup," 15 May 2019 And on tonight's season premiere, the 2018 Miss Alabama USA followed an unofficial series tradition by wearing a first-night gown by designer Randi Rahm. Glamour, "Bachelorette Hannah's Premiere Gown Is Unlike Any You've Seen Before," 14 May 2019 Yes, even today, when Meghan is a mere 48 hours postpartum, wearing pantyhose and heels and serving up her new son as unofficial royal rule seems to dictate, there will be sniping and speculation as to her character and intentions. Michelle Ruiz, Vogue, "The Controversy Behind Who Got to Cover Meghan and Harry’s Royal Baby Reveal," 8 May 2019 Team Jenner walked the red carpet together, wearing coordinating mermaid gowns covered in feathers and beadwork – the unofficial, official uniform of this year's Met Gala. Kelsey Stiegman, Seventeen, "Kendall and Kylie Jenner Wear Matching Feather Dresses on the 2019 Met Gala Red Carpet," 7 May 2019 This isn't the first time Chrissy's been honored: See also, being named unofficial Mayor of Twitter. Katherine J. Igoe, Marie Claire, "Chrissy Teigen Is Named a TIME Most Influential Person—and Gets a Hilarious, Fan-Made Cover," 18 Apr. 2019 Over the years, Chrissy Teigen has proven herself as the unofficial queen of Twitter, even garnering fan love from Princess Beatrice of York. Nicole Saunders, Harper's BAZAAR, "Twitter Reacts to Dwyane Wade Crashing Into Chrissy Teigen and John Legend," 11 Apr. 2019 Analysts expect the industry to report an overall decline of around 5% in sales for March, historically one of the biggest months for car sales as the unofficial start to the spring selling season. Adrienne Roberts, WSJ, "U.S. Auto Sales Stumbled in First Quarter," 2 Apr. 2019 For the past 20 years, Kalinsky’s benefit has marked the unofficial start of the LGBTQ fundraising season and this year supports three worthy charities: the Ali Forney Center, the Elton John AIDS Foundation, and Lambda Legal. Ian Malone, Vogue, "This Year’s Jeffrey Fashion Cares Event Unfolded in Spectacular Fashion," 11 Apr. 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

23 May 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

Comments on unofficial

What made you want to look up unofficial? Please tell us where you read or heard it (including the quote, if possible).


to speak slightingly about or to degrade

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