English Lexicon

Unofficial

/ˌʌnəˈfɪʃəl/
adjectiveCEFR B2 (Upper)Top #1500 frequency
Full Thesaurus

Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Not recognized or sanctioned by an authority.

    "The unofficial report provided insights that were not included in the formal documentation."
  2. 2

    Informal or not formally acknowledged.

    "He held an unofficial meeting to discuss the project updates."

Thesaurus & Semantic Spectrum

Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The word 'unofficial' is formed from the prefix 'un-' meaning 'not' and the root 'official', which comes from the Latin 'officialis', meaning 'pertaining to duty or office'. The term evolved in English during the late 19th century to describe something that is not authorized or recognized by an official body.

Quick Vocabulary Retention Check

Which of the following is the closest synonym for "Unofficial"?

Thesaurus & Synonyms Graph

Explore Nuanced Synonyms for "Unofficial"

Discover exact matches, context-specific alternatives, and antonyms with intensity ratings in the VocabDictionary Thesaurus.

View "Unofficial" Synonym Map