int. Not in polite use. [Altered form of by God; cf. bedad, begar.] An exclamation, used to give weight to a statement.
1742. Fielding, J. Andrews, III. ix. (1743), 179 (L.). Begad, Madam, answered he, tis the very same I met.
1848. Thackeray, Van. Fair, II. iv. 39. Only one, begad, in the World.