Similar word to vulgar:

X-rated, base, blue, boorish, cheap, coarse, common, contemptible, crude, dirty, disgusting, dishonorable, filthy, fractious, gross, hard-core, ignoble, impolite, improper, indecent, indecorous, indelicate, inferior, low, malicious, nasty, naughty, obscene, odious, off-color, profane, raw, repulsive, ribald, risqué, rough, scatological, slippery, smutty, sneaking, soft-core, sordid, suggestive, tasteless, tawdry, uncouth, unmannerly, unrefined, unworthy, villainous