unofficial
Britishadjective
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not official or formal
an unofficial engagement
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not confirmed officially
an unofficial report
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(of a strike) not approved by the strikers' trade union
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(of a medicinal drug) not listed in a pharmacopoeia
Other Word Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He is also the youngest person to play in an unofficial game with United’s first team.
From Los Angeles Times ● Sep. 15, 2026
One street has become the neighborhood’s unofficial wellness avenue, where there’s just store after store of red-light therapy, bathhouses, and microneedling.
From Slate ● Sep. 6, 2026
Beyond that, Huntsinger falls back on the festival’s unofficial motto: “Underpromise, overdeliver.”
From Los Angeles Times ● Sep. 3, 2026
Oasis' 1995 classic Wonderwall has secured the title of second biggest UK song of the summer on TikTok after becoming the unofficial soundtrack to England's World Cup journey.
From BBC ● Sep. 1, 2026
I moved fast, back the way I had come, and I was reluctant to camp for fear there might be some unofficial non-government bears about.
From "Travels with Charley in Search of America" by John Steinbeck
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
