Word.ws English Dictionary

unauthorised

unauthorised is the alternative spelling of unauthorized.

Meaning of unauthorized

Adjective

unauthorized (not comparable)

  1. Not having any authority.
  2. Without official authorization.
    • The dangers of scofflawry vary wildly. The person who illegally spits on the sidewalk remains disgusting, but clearly poses less risk to others than the company that illegally buries hazardous chemical waste in an unauthorized location.1983 January 24, Frank Trippett, “Essay: A Red Light for Scofflaws”, in Time

Forms of unauthorised

comparativemore unauthorised
superlativemost unauthorised

Origin of unauthorised

From un- + authorised.

Words formed from unauthorised

Phrases with unauthorised

Questions about unauthorised

What is unauthorised the alternative spelling of?
Unauthorised is the alternative spelling of unauthorized.

Words near unauthorised in the dictionary

  1. unauthenticated
  2. unauthenticates
  3. unauthenticating
  4. unauthenticity
  5. unauthored
  6. unauthorised
  7. unauthorised term
  8. unauthorised terms
  9. unauthorisedly
  10. unauthoritative
  11. unauthoritatively

Source and license

Adapted from Wiktionary: unauthorised (page history and authors); unauthorized (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “unauthorised.” Word.ws, https://word.ws/unauthorised. Based on Wiktionary, CC BY-SA 4.0.