Synonyms of unauthorized

unauthorized

adjective

as in improper

without permission; not authorized

an unauthorized use of government vehicles

Unauthorized personnel are not allowed in the building.

Synonyms & Similar Words

• improper
• illicit
• illegal
• unlawful
• inappropriate
• unacceptable
• illegitimate
• prohibited
• unlicensed
• forbidden
• unsuitable
• impermissible
• outlawed
• excluded
• proscribed
• barred
• unbearable
• objectionable
• banned
• taboo
• interdicted
• intolerable
• unsanctioned
• unseemly
• unendurable
• ineffable
• unmentionable
• refused
• rejected
• verboten
• disallowed
• tabu
• prevented
• revoked
• discouraged
• stopped
• vetoed
• precluded
• disapproved
• suppressed
• blocked
• repressed
• hindered
• obstructed
• shut out
• impeded
• ruled out

Antonyms & Near Antonyms

• appropriate
• legal
• lawful
• legitimate
• permitted
• acceptable
• authorized
• licensed
• certified
• approved
• endorsed
• tolerable
• okay
• accredited
• accepted
• sanctioned
• endurable
• bearable
• allowed
• OK
• warranted
• granted
• mandatory
• promoted
• suitable
• supported
• proper
• required
• commanded
• indorsed
• allowable
• encouraged
• permissible
• condoned
• ordered
• unobjectionable
• permissive
• countenanced
• vouchsafed
• accorded
• tolerated
• brooked
• seemly
• sufferable