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Blackball vs Undefined - What's the difference?

blackball | undefined |

As a noun blackball

is a rejection, a vote against admitting someone.

As a verb blackball

is to vote against, especially in an exclusive organization.

As an adjective undefined is

lacking a definition or value.

blackball

English

Noun

(en noun)
  • A rejection, a vote against admitting someone.
  • A black ball used to indicate such a negative vote.
  • the act of so rejecting someone.
  • A kind of large black sweet; a niggerball.
  • A substance for blacking shoes, boots, etc. or for taking impressions of engraved work.

    • Verb

    (en verb)
  • To vote against, especially in an exclusive organization.
  • *1898 , Willa Cather, The Westbound Train
  • *:Why, if I had known you all my life I should have grown up in the condition of Adam before the fall, and they would have blackballed me at the clubs.
  • To ostracize.

    • 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