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infidelity
5 dictionary results for: infidelity
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
in·fi·del·i·ty       [in-fi-del-i-tee] Pronunciation Key
–noun, plural -ties.
1.marital disloyalty; adultery.
2.unfaithfulness; disloyalty.
3.lack of religious faith, esp. Christian faith.
4.a breach of trust or a disloyal act; transgression.

[Origin: 1375–1425; late ME < L infidélitās, equiv. to infidéli(s) unfaithful (see infidel) + -tās -ty2]
American Heritage Dictionary - Cite This Source - Share This
in·fi·del·i·ty       (ĭn'fĭ-děl'ĭ-tē)  Pronunciation Key 
n.   pl. in·fi·del·i·ties
    1. Unfaithfulness to a sexual partner, especially a spouse.
    2. An act of sexual unfaithfulness.
  1. Lack of fidelity or loyalty.
  2. Lack of religious belief.

Online Etymology Dictionary - Cite This Source - Share This
infidelity 
1509, "want of faith, unbelief in religion," from L. infidelitas "unfaithfulness," noun of quality from infidelis (see infidel). Meaning "unfaithfulness or disloyalty to a person" is from 1529, originally to a sovereign, later 16c. to a lover or spouse.

WordNet - Cite This Source - Share This
infidelity

noun
the quality of being unfaithful [ant: faithfulness

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Infidelity

In`fi*del"i*ty\, n.; pl. Infidelities. [L. infidelitas: cf. F. infid['e]lit['e].]

1. Want of faith or belief in some religious system; especially, a want of faith in, or disbelief of, the inspiration of the Scriptures, of the divine origin of Christianity.

There is, indeed, no doubt but that vanity is one of the principal causes of infidelity. --V. Knox.

2. Unfaithfulness to the marriage vow or contract; violation of the marriage covenant by adultery.

3. Breach of trust; unfaithfulness to a charge, or to moral obligation; treachery; deceit; as, the infidelity of a servant. "The infidelity of friends." --Sir W. Temple.

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