Dictionary.com

infidelity

[ in-fi-del-i-tee ]
/ ˌɪn fɪˈdɛl ɪ ti /
Save This Word!

noun, plural in·fi·del·i·ties.
marital disloyalty; adultery.
unfaithfulness; disloyalty.
lack of religious faith, especially Christian faith.
a breach of trust or a disloyal act; transgression.
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of infidelity

1375–1425; late Middle English <Latin infidēlitās, equivalent to infidēli(s) unfaithful (see infidel) + -tās-ty2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use infidelity in a sentence

British Dictionary definitions for infidelity

infidelity
/ (ˌɪnfɪˈdɛlɪtɪ) /

noun plural -ties
lack of faith or constancy, esp sexual faithfulness
lack of religious faith; disbelief
an act or instance of disloyalty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK