gab Look up gab at Dictionary.com
c.1200, via Scottish and northern England dialect, from O.N. gabba "to mock," or O.Fr. gabber "mock, boast," both probably ultimately imitative. Gabby first attested 1719; gabfest "session of conversation" is 1897 Amer.Eng. slang. Gift of the gab "talent for speaking" is from 1680s.