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Wis vs Undefined - What's the difference?

wis | undefined |

As adjectives the difference between wis and undefined

is that wis is (rare|obsolete|or|dialectal) certain while undefined is lacking a definition or value.

As an adverb wis

is (rare|obsolete|or|dialectal) certainly, surely.

As a verb wis

is (obsolete|or|archaic) to know.

wis

English

Alternative forms

* wiss, ywis, iwis

Etymology 1

From (etyl) . More at ywis.

Adverb

(en adverb)
  • (rare, obsolete, or, dialectal) Certainly, surely
  • * 1884 , Charlotte Mary Yonge, The armourer's prentices :
    • So I wis would the Dragon under him [...]
  • (rare, obsolete, or, dialectal) Really, truly
  • (rare, obsolete, or, dialectal) Indeed
    • "As wis God helpe me." --Chaucer.

    Adjective

    (en adjective)
  • (rare, obsolete, or, dialectal) Certain
  • (rare, obsolete, or, dialectal) Sure
    • He was wis on his word
    Derived terms
    * (l)

    Etymology 2

    From an incorrect division, mistaking . See ywis for more information. The German verb wissen'' appears similar, but in fact corresponds etymologically to the English verb ''wit ; both of those verbs are only indirectly related to this one.

    Verb

  • (obsolete, or, archaic) To know.
  • (obsolete, or, archaic) To think, suppose.
    • "Howe'er you wis ." --R. Browning.
  • (obsolete, or, archaic) To imagine, ween; to deem.
    • Nor do I know how long it is (For I have lain entranced, I wis ). --Coleridge.
    ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined