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Infidelity vs Undefined - What's the difference?

infidelity | undefined |

As a noun infidelity

is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As an adjective undefined is

lacking a definition or value.

infidelity

English

Noun

(infidelities)
  • Unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.
  • Unfaithfulness in some other moral obligation.
  • * 1937 , Arnold Oskar Meyer, England in German opinion throughout the centuries , page 6:
    • It was disastrous that England's infidelity towards Frederick the Great — which no one, not even a German, condemned more strongly than did William Pitt — had to affect one of the most popular heroes of our national history.
  • Lack of religious belief.
  • * Bishop Ward
    • The means used to this purpose are partly didactical, and partly protreptical; demonstrating the truth of the gospel, and then urging the professors of those truths to be stedfast(SIC) in the faith, and to beware of infidelity .

    Synonyms

    * (marital) adultery * (moral) betrayal * (religious) faithlessness

    Antonyms

    * (moral) faithfulness * (moral) loyalty * (moral) fidelity

    Related terms

    * (religious) infidel

    See also

    * (wikipedia "infidelity")

    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