Wis

• (adv.) Certainly; really; indeed. • (v. t.) To think; to suppose; to imagine; -- used chiefly in the first person sing. present tense, I wis. See the Note under Ywis.
Found on http://thinkexist.com/dictionary/meaning/wis/

Wis

Wis adverb [ Aphetic form of iwis , ywis ; or from Icelandic viss certain. See Ywis .] Certainly; really; indeed. [ Obsolete] 'As wis God helpe me.' Chaucer.
Found on http://www.encyclo.co.uk/webster/W/43

Wis

Wis transitive verb [ Due to mistaking Middle English iwis certain, Anglo-Saxon 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 . [ Obsolete or Poetic] ...
Found on http://www.encyclo.co.uk/webster/W/43

wis

to know, to believe
Found on http://phrontistery.info/w.html

Wis

Was
Found on http://www.glasgowvant.com/glaswegian-dictionary-terms-and-phrases/
No exact match found