Synonyms of illicit

1 Syllable

wrong

2 Syllables

heavy, guilty, crooked, wrongful, lawless, racket, no-no, dirty, bootleg

3 Syllables

improper, immoral, criminal, villainous, contraband, black-market, bootlegged, felonious, outlawed, illegal, furtive, unlawful

4 Syllables

unlicensed, adulterous, prohibited, extralegal, indictable, clandestine

5 Syllables

unauthorized, under-the-counter

6 Syllables

illegitimate, unconstitutional, extracurricular