Ribald

n.	1.	A low, vulgar, brutal, foul-mouthed wretch; a lewd fellow. Ribald was almost a class name in the feudal system . . . He was his patron's parasite, bulldog, and tool . . . It is not to be wondered at that the word rapidly became a synonym for everything ruffianly and brutal. - Earle.
a.	1.	Low; base; mean; filthy; obscene. The busy day, Waked by the lark, hath roused the ribald crows. - Shak.

Noun	1.	ribald - a ribald person; someone who uses vulgar and offensive language
Adj.	1.	ribald - humorously vulgar; "bawdy songs"; "off-color jokes"; "ribald language" Synonyms: bawdy, off-color

Babbitt, Fescennine, Philistine, Rabelaisian, abusive, arriviste, bawdy, blasphemous, blue, boor, bounder, bourgeois, cad, calumniatory, calumnious, churl, clown, coarse, comminatory, contumelious, crass, crude, cursing, damnatory, denunciatory, devil, dirty, dysphemistic, earthy, enfant terrible, epicier, epithetic, excommunicative, excommunicatory, execratory, filthy, foul, foul-mouthed, foul-spoken, foul-tongued, fulminatory, fulsome, gaudy, gross, groundling, guttersnipe, hooligan, ill-bred fellow, imprecatory, impure, ithyphallic, lewd, looby, loud, lout, low fellow, lurid, maledictory, meretricious, mischief, mucker, nasty, nouveau riche, obscene, offensive, parvenu, peasant, pornographic, profane, rapscallion, rascal, raunchy, raw, risque, rogue, rough, roughneck, rowdy, ruffian, salacious, scalawag, scatologic, scurrile, scurrilous, slyboots, smoking-room, smutty, sultry, unchaste, unclean, unprintable, unrepeatable, upstart, vile, vituperative, vulgarian, vulgarist, yokel