noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˌɪnfɪˈdɛlɪti/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:IH2 N F IH0 D EH1 L IH0 T IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 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.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Unfaithfulness in some other moral obligation.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
Lack of religious belief.
Definition source: English Wiktionary via Wiktextract
Usage: archaic, countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: irreligion
Antonyms: none provided
4
noun
Meaning 4
the quality of being unfaithful
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
From Middle English infidelite, from Middle French infidelité (modern French infidélité) and its etymon Latin īnfidēlitās. Equivalent to infidel + -ity.
Across languages
Translations
55 source translations are retained for this English entry.
Arabic:
خِيَانَة
(ḵiyāna)
— unfaithfulness in marriage or other moral obligation
Asturian:
infidelidá
— unfaithfulness in marriage or other moral obligation
Belarusian:
няве́рнасць
(njavjérnascʹ)
— unfaithfulness in marriage or other moral obligation
Bulgarian:
невя́рност
(nevjárnost)
— unfaithfulness in marriage or other moral obligation
Catalan:
infidelitat
— unfaithfulness in marriage or other moral obligation
Chinese Mandarin:
異心 /异心
(yìxīn)
— unfaithfulness in marriage or other moral obligation
Chinese Mandarin:
不貞 /不贞
(bùzhēn)
— unfaithfulness in marriage or other moral obligation
Czech:
nevěra
— unfaithfulness in marriage or other moral obligation
Dutch:
ontrouw
— unfaithfulness in marriage or other moral obligation
Finnish:
uskottomuus
— unfaithfulness in marriage or other moral obligation
French:
infidélité
— unfaithfulness in marriage or other moral obligation
Galician:
infidelidade
— unfaithfulness in marriage or other moral obligation
German:
Untreue
— unfaithfulness in marriage or other moral obligation
Hungarian:
hűtlenség
— unfaithfulness in marriage or other moral obligation
Irish:
mídhílseacht
— unfaithfulness in marriage or other moral obligation
Macedonian:
неверство
(neverstvo)
— unfaithfulness in marriage or other moral obligation
Macedonian:
неверност
(nevernost)
— unfaithfulness in marriage or other moral obligation
Norwegian Bokmål:
utroskap
— unfaithfulness in marriage or other moral obligation
Polish:
niewierność
— unfaithfulness in marriage or other moral obligation
Portuguese:
infidelidade
— unfaithfulness in marriage or other moral obligation
Romanian:
infidelitate
— unfaithfulness in marriage or other moral obligation
Russian:
неве́рность
(nevérnostʹ)
— unfaithfulness in marriage or other moral obligation
Scottish Gaelic:
adhaltranas
— unfaithfulness in marriage or other moral obligation
Serbo-Croatian:
неверност
— unfaithfulness in marriage or other moral obligation
Serbo-Croatian:
невјерност
— unfaithfulness in marriage or other moral obligation
Serbo-Croatian:
nevernost
— unfaithfulness in marriage or other moral obligation
Serbo-Croatian:
nevjernost
— unfaithfulness in marriage or other moral obligation
Slovak:
nevera
— unfaithfulness in marriage or other moral obligation
Slovene:
nezvestoba
— unfaithfulness in marriage or other moral obligation
Spanish:
infidelidad
— unfaithfulness in marriage or other moral obligation
Swedish:
otrohet
— unfaithfulness in marriage or other moral obligation
Turkish:
ihanet
— unfaithfulness in marriage or other moral obligation
Turkish:
aldatma
— unfaithfulness in marriage or other moral obligation
Ottoman Turkish:
زنا
(zinâ)
— unfaithfulness in marriage or other moral obligation
Ukrainian:
неві́рність
(nevírnistʹ)
— unfaithfulness in marriage or other moral obligation
Arabic:
كُفْر
(kufr)
— lack of religious belief
Arabic:
زَنْدَقَة
(zandaqa)
— lack of religious belief
Catalan:
infidelitat
— lack of religious belief
Czech:
nevíra
— lack of religious belief
Dutch:
areligieus
— lack of religious belief
Finnish:
uskottomuus
— lack of religious belief
Galician:
infidelidade
— lack of religious belief
Hungarian:
hitetlenség
— lack of religious belief
Hungarian:
pogányság
— lack of religious belief
Irish:
ainchreideamh
— lack of religious belief
Irish:
éigreideamh
— lack of religious belief
Manx:
anchredjuaght
— lack of religious belief
Polish:
niewiara
— lack of religious belief
Portuguese:
infidelidade
— lack of religious belief
Russian:
безве́рие
(bezvérije)
— lack of religious belief
Russian:
безбо́жие
(bezbóžije)
— lack of religious belief
Russian:
неве́рие
(nevérije)
— lack of religious belief
Scottish Gaelic:
neo-chreidmheachd
— lack of religious belief
Spanish:
infidelidad
— lack of religious belief
Ottoman Turkish:
كفر
(küfr)
— lack of religious belief