UNOFFICIAL Synonyms: 33 Similar and Opposite Words

unofficial

adjective

Definition of unofficial

as in unauthorized

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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 Paul McCartney, 84, recently had a shocking encounter with fans on an unofficial Beatles’ Magical Mystery Tour bus in Liverpool, England. — Raven Brunner, PEOPLE, 21 July 2026 Thomas Giandomenico took unauthorized and unofficial photos of her husband’s body. — Andrew Khouri, Los Angeles Times, 19 July 2026 With the unofficial second half of the Major League Baseball season underway on Friday, five games were slated to be played in affected areas, with several making some logistical changes. — Ryan Morik, FOXNews.com, 17 July 2026 The tradition dates to Glasgow, where placing bright orange traffic cones atop public statues began as a late-night prank in the 1980s before evolving into an unofficial symbol of the country’s irreverent humor. — Leah Willingham, Fortune, 15 July 2026 See All Example Sentences for unofficial

Recent Examples of Synonyms for unofficial

Adjective

In response, approximately 25% of developers now design APIs with agents as the primary end consumer rather than humans, and over half of them cite unauthorized agent access as a security concern.

— Mia Osmonbekov, Fortune, 23 July 2026
Hugging Face disclosed that investigators reconstructed more than 17,000 forensic events associated with the intrusion while confirming unauthorized access to certain internal systems and service credentials.

— Emil Sayegh, Forbes.com, 23 July 2026

Definition of unauthorized

Adjective

But in recent years, the informal community has become more active — and, at times, more divisive.

— William Melhado, Sacbee.com, 21 July 2026
What if every leader was expected to create transparent pathways for growth instead of relying on informal networks and chance opportunities?

— Shelley Zalis, Forbes.com, 21 July 2026

Definition of informal

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unoccupied

unofficial

unordered

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“Unofficial.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unofficial. Accessed 27 Jul. 2026.

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Synonyms of unofficial

adjective

Example Sentences

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