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
His unofficial time from home plate to the left field corner was 48 seconds, as timed by a reporter.
—
Chris Biderman, Sacbee.com, 26 May 2025
America of a Memorial Day weekend when the unofficial start of summer means school's out and play is in?
—Arkansas Online, 26 May 2025
Memorial Day ushers in the unofficial start of summer and gives us a little extra time to kick back with a book.
—Holly Corbett, Forbes.com, 26 May 2025
Memorial Day weekend marks the unofficial start of summer, which means more Americans are firing up their grills and filling their bellies with burgers and barbecue.
—Peter Burke, FOXNews.com, 25 May 2025
See All Example Sentences for unofficial
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Chris Biderman, Sacbee.com, 26 May 2025
America of a Memorial Day weekend when the unofficial start of summer means school's out and play is in?
—Arkansas Online, 26 May 2025
Memorial Day ushers in the unofficial start of summer and gives us a little extra time to kick back with a book.
—Holly Corbett, Forbes.com, 26 May 2025
Memorial Day weekend marks the unofficial start of summer, which means more Americans are firing up their grills and filling their bellies with burgers and barbecue.
—Peter Burke, FOXNews.com, 25 May 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 4 Jun. 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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