unofficial
adjective
un·of·fi·cial
ˌən-ə-ˈfi-shəl 
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
After all, the unofficial dress code for the night always calls for dazzling and shimmering glamour.
—
Christian Allaire, Vogue, 16 Dec. 2025
The unofficial family greeting party The sky was blue, with patches of clouds overhead when Angela Perez arrived at Alligator Alcatraz on an early November afternoon.
—Miami Herald, 16 Dec. 2025
Making music may be his day job, but setting trends has become Mahmood’s unofficial side hustle.
—Andre Claudio, Sourcing Journal, 15 Dec. 2025
Washington maintains close unofficial ties with Taiwan, and is bound by law to sell arms to the island for its self-defense – despite recognizing the People’s Republic as the sole legitimate government of China, and acknowledging Beijing’s position that Taiwan is part of China.
—Jessie Yeung, CNN Money, 12 Dec. 2025
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Christian Allaire, Vogue, 16 Dec. 2025
The unofficial family greeting party The sky was blue, with patches of clouds overhead when Angela Perez arrived at Alligator Alcatraz on an early November afternoon.
—Miami Herald, 16 Dec. 2025
Making music may be his day job, but setting trends has become Mahmood’s unofficial side hustle.
—Andre Claudio, Sourcing Journal, 15 Dec. 2025
Washington maintains close unofficial ties with Taiwan, and is bound by law to sell arms to the island for its self-defense – despite recognizing the People’s Republic as the sole legitimate government of China, and acknowledging Beijing’s position that Taiwan is part of China.
—Jessie Yeung, CNN Money, 12 Dec. 2025
See All Example Sentences for unofficial
Cite this Entry
“Unofficial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unofficial. Accessed 19 Dec. 2025.
Copy CitationMedical Definition
unofficial
adjective
un·of·fi·cial
ˌən-ə-ˈfish-əl
: 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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