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Synonyms

infidelity

American  
[in-fi-del-i-tee] / ˌɪn fɪˈdɛl ɪ ti /

noun

plural

infidelities
  1. marital disloyalty; adultery.

  2. unfaithfulness; disloyalty.

  3. lack of religious faith, especially Christian faith.

  4. a breach of trust or a disloyal act; transgression.


infidelity British  
/ ˌɪnfɪˈdɛlɪtɪ /

noun

  1. lack of faith or constancy, esp sexual faithfulness

  2. lack of religious faith; disbelief

  3. 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

Etymology

Origin of infidelity

First recorded in 1375–1425; late Middle English, from Latin infidēlitās; equivalent to infidel + -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It turns out his mother lied to me about many things: her infidelity and numerous financial issues.

From MarketWatch

However, Jackson's later years would be punctuated by scandal, including revelations of marital infidelity and financial impropriety involving his son and political heir, Jesse Jackson Jr, who served as a congressman from Illinois.

From BBC

Also at the Olympics, the Norwegian athlete who confessed infidelity after winning a medal.

From MarketWatch

An attorney retained by Andrew’s family told ABC7 that moments before the killing, Andrew read a diary entry in which his wife described engaging in infidelity.

From Los Angeles Times

In it, she leveled several shocking accusations about Harbour’s alleged infidelity, with the townhouse playing a central role in the title track of the record.

From MarketWatch