# infidelity

> English word · Noun · IPA /ˌɪnfɪˈdɛlɪti/ · frequency rank #20,672

## Definitions
1. Unfaithfulness in a marriage or an intimate (sexual or romantic) relationship: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.
2. Unfaithfulness in some other moral obligation.
3. Lack of religious belief.

## Etymology
From Middle English infidelite, from Middle French infidelité (modern French infidélité) and its etymon Latin īnfidēlitās. Equivalent to infidel + -ity.

## Common misspellings (15)
`ifnidelity`, `infdielity`, `inffidelity`, `infiddelity`, `infideilty`, `infidelitty`, `infidelityy`, `infideliyt`, `infidellity`, `infideltiy`, `infidleity`, `infiedlity`, `inifdelity`, `innfidelity`, `nifidelity`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/infidelity