Part of Speech: adjective
Definition: offensive, indecent, smutty
Synonyms: awful, beastly, bum, dirty, fierce, filthy, foul, hellish, horrid, immodest, immoral, improper, impure, indecorous, indelicate, lascivious, lewd, licentious, loathsome, murderous*, noisome, objectionable, obnoxious, obscene, odious, ornery, outrageous, poison, polluted, pornographic, raunchy*, ribald, rough, shameful, sickening, soiled, tough, unclean, uncleanly, ungodly, unholy, unseemly, vile, vulgar, wicked 

* = informal/non-formal usage