Used as a participial adjective (and very rarely as the past participle of the verb ‘unauthorise’) to describe actions carried out without official permission.

non autoriséSe dit de quelque chose effectué ou obtenu sans autorisation officielle; s’accorde en genre et en nombre.

The documents were acquired by unauthorised methods.

Les documents ont été obtenus par des méthodes non autorisées.

Definitions

unauthorisedadjective

Not having official permission or approval.

The unauthorised access to the building was quickly detected by security.

Not recognized or sanctioned by a governing body or authority.

The unauthorised biography contained many controversial claims about the celebrity.

unauthorisedpast participle

Performed or obtained without official authorisation.

The documents were acquired by unauthorised methods.