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 As the gateway to Mount Desert Island and Acadia National Park, Trenton serves as the unofficial starting point for the byway. — Lauren Dana Ellman, Travel + Leisure, 5 July 2026 With roughly 6 1/2 minutes left, Chestnut had devoured 32 dogs to Gray’s 10, according to live unofficial results on ESPN. — Joe Marusak, Charlotte Observer, 4 July 2026 According to an unofficial and widely circulated online list, some 38,500 people were still unaccounted for, down from nearly 60,000 in the days immediately after the quakes. — Anniek Bao, CNBC, 3 July 2026 These are often unofficial TV boxes sold online under countless names. — Kurt Knutsson, FOXNews.com, 3 July 2026 See All Example Sentences for unofficial

Recent Examples of Synonyms for unofficial

Adjective

AssuranceAmerica determined that an unauthorized third party had gained access to a portion of its IT systems and copied some important files.

— Jibin Joseph, PC Magazine, 10 July 2026
Officials have described him as an unauthorized immigrant but did not answer specific questions about his status.

— Jeanine Santucci, USA Today, 10 July 2026

Definition of unauthorized

Adjective

But the series also goes behind the scenes to explore how an informal gathering grew into a big-budget, heavily regulated event.

— Stuart Miller, Los Angeles Times, 7 July 2026
The alliance grew out of an informal coalition that included organizations tied to Ananas Anam, Bananatex and Regenerate Fashion.

— Alexandra Harrell, Footwear News, 7 July 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 12 Jul. 2026.

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Synonyms of unofficial

adjective

Example Sentences

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