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

The Whisper number is the Street's unofficial view on earnings. —Adam Sarhan, Forbes.com, 9 Sep. 2025

The following are unofficial results for the 2025 primary election in Charlotte. —David Raynor, Charlotte Observer, 9 Sep. 2025

The news arrives weeks after the 27-year-old driver set an unofficial lap record at the Nürburgring in a Ferrari 296 GT3. —Saajan Jogia, MSNBC Newsweek, 8 Sep. 2025

Numerous high-profile accounts have been hijacked to promote crypto scams, including one of OpenAI's unofficial accounts in late 2024. —PC Magazine, 7 Sep. 2025

Word History

First Known Use

1784, in the meaning defined above

Rhymes for unofficial

• artificial
• beneficial
• cicatricial
• interstitial
• nonjudicial
• nonofficial
• prejudicial
• sacrificial
• superficial
• extrajudicial
• semiofficial
• initial

Medical 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