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Doorkeeper vs Undefined - What's the difference?

doorkeeper | undefined |

As a noun doorkeeper

is the person in charge of an entryway, sometimes just a doorman, sometimes something more.

As an adjective undefined is

lacking a definition or value.

doorkeeper

English

Noun

(en noun)
  • The person in charge of an entryway, sometimes just a doorman, sometimes something more.
  • * 1920 , Willa Cather, Youth and the Bright Medusa.
    • The manager at Carnegie Hall was told to get another usher in his stead; the doorkeeper at the theatre was warned not to admit him to the house; and Charley Edwards remorsefully promised the boy's father not to see him again.

    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