noun · 3 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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/mɛnˈdæsəti/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/mɛnˈdæsəti/
General-American:[-ɾi]
CMU ARPABET:M EH0 N D AE1 S IH0 T IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The fact or condition of being untruthful; dishonesty.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A deceit, falsehood, or lie.
Definition source: English Wiktionary via Wiktextract
Usage: countable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
the tendency to be untruthful
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: veracity
Broader terms: untruthfulness
History
Etymology
From Late Latin mendacitas, from Latin mendāx (“deceitful, deceptive, lying”) + -itās (suffix forming nouns indicating a state of being). Mendāx is derived from mentior (“to deceive, lie”) (from mēns, mentis (“mind; intellect; judgment, reasoning”), from Proto-Indo-European *méntis (“thought”)) + -āx (suffix forming adjectives expressing a tendency or inclination), or from Proto-Indo-European *mend- (“to fault”). By surface analysis, Latin mendāc- + -ity.
Across languages
Translations
34 source translations are retained for this English entry.
Bulgarian:
лъжливост
(lǎžlivost)
— fact or condition of being untruthful; dishonesty
Danish:
uhæderlighed
— fact or condition of being untruthful; dishonesty
Danish:
løgnagtighed
— fact or condition of being untruthful; dishonesty
Dutch:
leugenachtigheid
— fact or condition of being untruthful; dishonesty
Dutch:
oneerlijkheid
— fact or condition of being untruthful; dishonesty
Finnish:
valheellisuus
— fact or condition of being untruthful; dishonesty
Finnish:
epärehellisyys
— fact or condition of being untruthful; dishonesty
German:
Verlogenheit
— fact or condition of being untruthful; dishonesty
Italian:
mendacità
— fact or condition of being untruthful; dishonesty
Norwegian:
uærlighet
— fact or condition of being untruthful; dishonesty
Portuguese:
mendacidade
— fact or condition of being untruthful; dishonesty
Portuguese:
falsidade
— fact or condition of being untruthful; dishonesty
Russian:
лжи́вость
(lžívostʹ)
— fact or condition of being untruthful; dishonesty
Spanish:
mendacidad
— fact or condition of being untruthful; dishonesty
Turkish:
yalancılık
— fact or condition of being untruthful; dishonesty
Ottoman Turkish:
یالانجیلق
(yalancılık)
— fact or condition of being untruthful; dishonesty
Bulgarian:
лъжа
(lǎža)
— a deceit, falsehood, or lie
Dutch:
leugen
— a deceit, falsehood, or lie
Dutch:
bedrog
— a deceit, falsehood, or lie
Finnish:
valhe
— a deceit, falsehood, or lie
Finnish:
petos
— a deceit, falsehood, or lie
Finnish:
vilppi
— a deceit, falsehood, or lie
German:
Unwahrheit
— a deceit, falsehood, or lie
Italian:
bugia
— a deceit, falsehood, or lie
Italian:
menzogna
— a deceit, falsehood, or lie
Italian:
falsità
— a deceit, falsehood, or lie
Italian:
mendacità
— a deceit, falsehood, or lie
Norwegian:
falskhet
— a deceit, falsehood, or lie
Portuguese:
mendacidade
— a deceit, falsehood, or lie
Portuguese:
falsidade
— a deceit, falsehood, or lie
Romanian:
falsitate
— a deceit, falsehood, or lie
Russian:
ложь
(ložʹ)
— a deceit, falsehood, or lie
Russian:
фальшь
(falʹšʹ)
— a deceit, falsehood, or lie