Gaf

According to the Old English Dictionary:

GAF

adj. Base, vile, lewd; turpis, vīlis, lŏquax :-- Hwǽr biþ his gaf spræc where will be his wanton discourse? Basil admn. 8; Norm. 50, 28. [Scot. gaff to talk loudly and merrily (?)]. DER. ge-gaf; and cf. gaffetung. gaf