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Definition of "infidelity" []

  • Unfaithfulness to a sexual partner, especially a spouse. (noun)
  • An act of sexual unfaithfulness. (noun)
  • Lack of fidelity or loyalty. (noun)
  • Lack of religious belief. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "infidelity" in a sentence
  • "And again: "Hadst thou not had a villain's heart, thou shouldst have gained my consent, then made this match, instead of hiding it from those who loved thee" -- a sentiment which would seem to us astounding and inexplicable had we not became familiar with it in the preceding pages relating to savages and barbarians, by whom what we call infidelity was considered unobjectionable, provided it was not done secretly."
  • "What does it mean, this gradual growth of what we call infidelity, of criticism and science on the one hand, this gradual death of the old traditions on the other?"
  • "What does it mean: this gradual growth of what we call infidelity, of criticism and science on the one hand, this gradual death of the old traditions on the other?"