In`fi*del"i*ty (?), n.; pl.
Infidelities (&?;). [L. infidelitas: cf. F.
infidélité.]
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.
