Wis (?), adv. [Aphetic form of iwis, ywis; or fr. Icel. viss certain. See Ywis.]
Certainly; really; indeed.
[Obs.] "As
wis God helpe me."
Chaucer.
© Webster 1913.
Wis, v. t. [Due to mistaking OE. iwis certain, AS. gewiss, for I wis. See Ywis.]
To think; to suppose; to imagine; -- used chiefly in the first person sing. present tense, I wis. See the Note under Ywis.
[Obs. or Poetic] "Howe'er you
wis."
R. Browning.
Nor do I know how long it is
(For I have lain entranced, I wis).
Coleridge.
© Webster 1913.