UNOFFICIAL Synonyms: 33 Similar and Opposite Words

unofficial

adjective

Definition of unofficial

as in unauthorized

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of unofficial When the axe fell, there was a swift backlash from the press, at least partly driven by Ian Levine, a prominent fan and unofficial script consultant. — Neil Oseman, Space.com, 21 Sep. 2026 Comfort and convenience are being prioritized in fashion, with early trends including pull-on pants, matching sets, and slip-on clogs, the latter of which has gotten the unofficial cool-girl stamp of approval. — Kaelin Dodge, InStyle, 19 Sep. 2026 So does anyone who has become the unofficial technical support department for friends and family. — New Atlas, 18 Sep. 2026 Interested in learning other official (and unofficial) aviation vocabulary? — Lydia Mansel, Travel + Leisure, 17 Sep. 2026 See All Example Sentences for unofficial

Recent Examples of Synonyms for unofficial

Adjective

The agent gained unauthorized access to the public-facing Medicare Statistics Reporting Service, enabling it to access both public and non-public files, and to write files to an internal server.

— Emily Forlini, Fortune, 24 Sep. 2026
Those capabilities include autonomous self-improvement, attempts to evade oversight, and certain forms of unauthorized system access.

— Aamir Khollam, Interesting Engineering, 23 Sep. 2026

Definition of unauthorized

Adjective

Despite its informal format, the encounter carries considerable symbolic significance after decades of strained relations between Washington and Caracas.

— Antonio María Delgado, Miami Herald, 21 Sep. 2026
College football kickers have started communicating with each other through informal group chats and social media to negotiate contracts, according to a report from the Wall Street Journal.

— Joshua Hong, Fortune, 20 Sep. 2026

Definition of informal

Browse Nearby Words

unoccupied

unofficial

unordered

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“Unofficial.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unofficial. Accessed 26 Sep. 2026.

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Synonyms of unofficial

adjective

Example Sentences

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