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Foolery vs Undefined - What's the difference?

foolery | undefined |

As a noun foolery

is foolish behaviour or speech.

As an adjective undefined is

lacking a definition or value.

foolery

English

Noun

(fooleries)
  • Foolish behaviour or speech.

    • Derived terms

    *

    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