Ay

Aye Aye, Ay Ay, adv. [Perh. a modification of yea, or from the interjection of admiration or astonishment, OE. ei, ey, why, hey, ay, well, ah, ha. Cf. MHG. & G. ei, Dan. ej. Or perh. akin to aye ever.] Yes; yea; -- a word expressing assent, or an affirmative answer to a question. It is much used in viva voce voting in legislative bodies, etc. [1913 Webster]

Note: This word is written I in the early editions of Shakespeare and other old writers. [1913 Webster]