int. Obs. [A euphemistic alteration of O God! earlier A God!] An expletive expressive of strength of feeling, conviction, etc.; = EGAD.
1728. Fielding, Love in Sev. Masques, I. v. Agad, and that opinion is not singular.
1752. Mrs. Lennox, Fem. Quixote, VII. xiii. II. 168. Agad! I have no great mind to a halter.