Synonyms of unauthorized
- 2 Syllables
- wildcat, groundless, crooked, wrongful, no-no, dirty, bootleg, shady
- 3 Syllables
- pirated, contraband, black-market, bootlegged, outlawed, illicit, illegal, offstage, unlawful
- 4 Syllables
- unjustified, hole-and-corner, unlicensed, unwarranted, unapproved, extralegal, unofficial, unsanctioned, surreptitious
- 5 Syllables
- under-the-counter
- 6 Syllables
- illegitimate, unconstitutional