Infidelity
/ˌɪn.fɪˈdɛl.ɪ.ti/noun
The act of being unfaithful to a partner or spouse.
Did you know?The word 'infidelity' comes from the Latin 'infidelis', meaning 'unfaithful', which was originally used to describe non-Christians in a religious context, linking it to notions of betrayal and loyalty.
Etymological Timeline
Latin
Latin
infidelis
“Unfaithful, disloyal, originally referencing those outside the Christian faith.”
Late Middle Ages
Old French
infidélité
“The state of being unfaithful in a romantic context.”
14th Century
Old French
infidèle
“Referring to a person who is not faithful, particularly in love or loyalty.”
15th Century
Middle English
infidelite
“The quality of being unfaithful, especially in marriage.”
Modern English
English
infidelity
“The act of being unfaithful in a committed relationship.”