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Ail vs Undefined - What's the difference?

ail | undefined |

As a noun ail

is .

As an adjective undefined is

lacking a definition or value.

ail

English

Etymology 1

From (etyl) (m), (m), from (etyl) .

Adjective

(en-adj)
  • (obsolete) Painful; troublesome.

    • Etymology 2

    From (etyl) .

    Verb

    (en verb)
  • To cause to suffer; to trouble, afflict. (Now chiefly in interrogative or indefinite constructions.)
    • Have some chicken soup. It's good for what ails you.
  • * Bible, Genesis xxi. 17
    • What aileth thee, Hagar?
  • * 2011 , "Connubial bliss in America", The Economist :
    • Not content with having in 1996 put a Defence of Marriage Act (DOMA) on the statue book, Congress has now begun to hold hearings on a Respect for Marriage Act. Defended, respected: what could possibly ail marriage in America?
  • To be ill; to suffer; to be troubled.
  • * Richardson
    • When he ails ever so little he is so peevish.
    Quotations
    * (English Citations of "ail")

    Noun

    (en noun)
  • An ailment; trouble; illness.

    • Etymology 3

    From (etyl) .

    Noun

    (en noun)
  • The awn of barley or other types of corn.

    • Anagrams

    * * ----

    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