ywis

• POS: Adverb
• HYPHEN: y=wis

CIDE DICTIONARY

ywis, adv. [OE. ywis, iwis, AS. gewis certain; akin to D. gewis, G. gewiss, and E. wit to know. See Wit to know, and Y-.].

 Certainly; most likely; truly; probably.  [1913 Webster]
" The common form iwis was often written with the prefix apart from the rest of the word and capitalized, as, I wis, I wisse, etc. The prefix was mistaken for the pronoun, I and wis, wisse, for a form of the verb wit to know. See Wis, and cf. Wit, to know."  [1913 Webster]
"“Ywis,” quod he, “it is full dear, I say.”"  [1913 Webster]
"She answered me, “I-wisse, all their sport in the park is but a shadow to that pleasure that I find in Plato.”"  [1913 Webster]
"A right good knight, and true of word ywis."  [1913 Webster]
"Our ship, I wis,
Shall be of another form than this."  [1913 Webster]