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
Sacramento’s ‘official unofficial’ World Cup headquarters Throughout the World Cup’s opening match, booze and food from the Line’s commercial kitchen space — including a special pop-up from Mexican restaurant La Sabrocita — flowed freely among the spirited fans.
—
Camila Pedrosa, Sacbee.com, 11 June 2026
Capris are the unofficial pants trend of summer 2026, and this slim-fitting denim pair makes the controversial cut a lot easier to pull off.
—Olivia Cigliano, InStyle, 11 June 2026
For generations, the Hudson Valley has served as New York City’s unofficial backyard—a place for summer swimming, antique hunting, leaf peeping, and weekends spent trading loud sirens for sweet birdsong.
—Jessica Chapel, Condé Nast Traveler, 10 June 2026
But Saeta, which has been outfitting the team since coming to its rescue after the country’s devastating 2010 earthquake, has been struggling to keep up with demands, creating an opening for designers and other vendors selling unofficial merchandise.
—Jacqueline Charles, Miami Herald, 10 June 2026
See All Example Sentences for unofficial
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Camila Pedrosa, Sacbee.com, 11 June 2026
Capris are the unofficial pants trend of summer 2026, and this slim-fitting denim pair makes the controversial cut a lot easier to pull off.
—Olivia Cigliano, InStyle, 11 June 2026
For generations, the Hudson Valley has served as New York City’s unofficial backyard—a place for summer swimming, antique hunting, leaf peeping, and weekends spent trading loud sirens for sweet birdsong.
—Jessica Chapel, Condé Nast Traveler, 10 June 2026
But Saeta, which has been outfitting the team since coming to its rescue after the country’s devastating 2010 earthquake, has been struggling to keep up with demands, creating an opening for designers and other vendors selling unofficial merchandise.
—Jacqueline Charles, Miami Herald, 10 June 2026
See All Example Sentences for unofficial
Cite this Entry
“Unofficial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unofficial. Accessed 13 Jun. 2026.
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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