# mendacious

> English word · Adjective · IPA /mɛnˈdeɪʃəs/ · frequency rank #88,600

## Definitions
1. Lying, untruthful or dishonest.
2. False or untrue.

## Etymology
Borrowed from Middle French mendacieux, from Latin mendācium (“lie, untruth”), from mendāx (“lying”).

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