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Falsity vs Undefined - What's the difference?

falsity | undefined |

As a noun falsity

is (countable) something that is false; an untrue assertion.

As an adjective undefined is

lacking a definition or value.

falsity

English

Noun

(falsities)
  • (countable) Something that is false; an untrue assertion.
  • :The belief that the world is flat is a falsity .
  • (uncountable) The characteristic of being untrue.
  • :The falsity of that statement is easily proven.

    • Usage notes

    Instances may be quoted in abundance from old authors to show that the first three words are often strictly synonymous; but the modern tendency has been decidedly in favor of separating them, falsehood'' standing for the concrete thing, an intentional lie; ''falseness'', for the quality of being guiltily false or treacherous: as, he is justly despised for his ''falseness'' to his oath; and ''falsity'', for the quality of being false without blame: as, the ''falsity'' of reasoning. — the ''Century Dictionary , 1911.

    Synonyms

    * fabrication * falsehood * falseness * falsity * fiction * untruth * See also

    Antonyms

    * truth * verity

    References

    * * * * * Oxford English Dictionary , second edition (1989) * Random House Webster's Unabridged Electronic Dictionary (1987-1996)

    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