ribald

a. Low; base; mean; filthy; obscene. [ 1913 Webster ]

The busy day,
Waked by the lark, hath roused the ribald crows. Shak. [ 1913 Webster ]

n. [ OE. ribald, ribaud, F. ribaud, OF. ribald, ribault, LL. ribaldus, of German origin; cf. OHG hrīpa prostitute. For the ending -ald cf. E. Herald. ] A low, vulgar, brutal, foul-mouthed wretch; a lewd fellow. Spenser. Pope. [ 1913 Webster ]

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. [ 1913 Webster ]

a. Like a ribald. Bp. Hall. [ 1913 Webster ]

a. Of a ribald quality. [ R. ] [ 1913 Webster ]