sooth (adv.)
truly
TN II.i.9[Sebastian to Antonio, responding to his question] No, sooth, sir
WT I.ii.17.2[Polixenes to Leontes, of his departure] Very sooth, tomorrow
WT IV.iv.344[disguised Polixenes to Florizel] Sooth, when I was young / And handed love as you do
x

Jump directly to