impermissible Synonyms

not permitted vetoed unwarrantable unlawful undue unacceptable tabu taboo refused proscribed wrongful unauthorized unmentionable unpermissible unallowed unallowable verboten unlicensed criticizable against the law unbearable out of bounds prohibited outlawed out forbidden displeasing disallowed disagreeable deplorable criminal contraband barred banned illegal illegitimate illicit invalid intolerable interdicted insufferable inexcusable ineligible inappropriate inadmissible improper bad