fay (n.)
faith
Ham II.ii.264[Hamlet to Rosencrantz and Guildenstern] by my fay, I cannot reason
RJ I.v.126[Capulet probably to his cousin] Ah, sirrah, by my fay, it waxes late
TS induction.2.80[Sly to all] By my fay, a goodly nap
SHAKESPEARE'S WORDS © 2020 DAVID CRYSTAL & BEN CRYSTAL