mendacity
C2CEFR level
85/100Rarity: very rare
TechnicalRegister
Medicine noun
The habitual practice of lying or deliberate untruthfulness.
There was no evidence of mendacity, only genuine confusion about the timeline.
Law noun
Untruthfulness; a tendency to lie.
The judge remarked on the witness's evident mendacity when confronted with the records.
Business noun
Untruthfulness; a habitual tendency to lie.
The regulator's report was scathing about the mendacity of the firm's public disclosures.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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