The meaning of UNOFFICIAL is not authorized or acknowledged by a government, group, class, or society : not official. How to use unofficial in a sentence.

Unofficial definition: not official or formal. See examples of UNOFFICIAL used in a sentence.

Definition of unofficial adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

UNOFFICIAL definition: 1. not official; not from a person in authority, the government, etc.: 2. not official; not from a…. Learn more.

1. Not official: the unofficial election results. 2. Not acting officially: an unofficial adviser.

Something unofficial is not established or authorized by an authority. It can also be a person not acting with official authority.

An unofficial action is not authorized, approved, or organized by a person in authority.

Aug 6, 2025 · Unofficial is an adjective that describes something that is not authorized, not recognized, or not formal. It often refers to information, roles, or actions that aren’t officially …

Factsheet What does the word unofficial mean? There are five meanings listed in OED's entry for the word unofficial. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

adjective not having official authority or sanction “a sort of unofficial mayor” “an unofficial estimate” “he participated in an unofficial capacity” synonyms: unauthorised, unauthorized