unauthorised

English edit

unauthorised (comparative more unauthorised, superlative most unauthorised)

(British spelling) Alternative spelling of unauthorized
- 1948 January and February, “Memoirs of Archibald Sturrock”, in Railway Magazine, page 47:
  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.
- 2021 January 13, “Network News: NR fined after teenage trespasser suffers electrocution injuries”, in RAIL, issue 922, page 17:
  [...] the fence provided by NR was substandard and poorly maintained, such that unauthorised access to the railway was straightforward.

not authorised — see unauthorized