unauthorised

U1N1A1U1T1H4O1R1I1S1E1D2

A form of unauthorized — Not having any authority.

Less commonScrabble 16

Meanings

adjectiveunauthorised (comparative more unauthorised, superlative most unauthorised)

comparative more unauthorised · superlative most unauthorised

  1. UKalternativeAlternative spelling of unauthorized.

    [...] the fence provided by NR was substandard and poorly maintained, such that unauthorised access to the railway was straightforward.

    2021 January 13, “Network News: NR fined after teenage trespasser suffers electrocution injuries”, in RAIL, issue 922, page 17
    2 more examples

    A dozen similar, but smaller footwarmers were made at Doncaster, without official sanction, and placed in the coaches of a train conveying some of the directors to London. Sturrock was taken to task by the chairman for having incurred this unauthorised expenditure, but before he left the meeting, the directors had ordered 200 footwarmers for public use.

    1948 January and February, “Memoirs of Archibald Sturrock”, in Railway Magazine, page 47

    Indeed, the day before Farage was milkshaked, Leave EU issued an unauthorised, and now withdrawn, re-edit of a Beastie Boys video, showing him and Ann Widdecombe pouring beer over their political opponents.

    2019 May 26, Stewart Lee, “Are milkshakes the new politics of resistance?”, in The Guardian

Synonyms & antonyms

adjectivenot endowed with authority

adjectivewithout official authorization

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Germanic*un-
  4. Proto-West Germanic*un-
  5. Old Englishun-
  6. Middle Englishun-
  7. Englishun-
  8. Englishauthorised
  9. Englishunauthorised

From un- + authorised.

Full word history & related roots →
Cite this entry
APA

unauthorised. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/unauthorised

MLA

“unauthorised.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/unauthorised. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “unauthorised,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/unauthorised.

Source: unauthorised on Wiktionary, CC BY-SA 4.0.