mendacious
Meaning
not telling the truth; lying
false or untrue
Structure
Usage
he was known for his mendacious statements to the press.
the memoir was criticized for being mendacious and self-serving.
she gave a mendacious account of the events to avoid blame.
Etymology
the word 'mendacious' originates from the latin verb mendāx, meaning 'lying' or 'false', which itself is derived from the noun mendum, signifying a physical flaw or error. the semantic evolution is clear: from a concrete 'fault' to the abstract act of 'faulty speaking' or deceit. the suffix -ācious was added in english, directly from the latin adjectival ending, to form an adjective meaning 'characterized by lying'. thus, the literal construction 'full of fault' logically transformed into the modern meaning of being habitually untruthful.
Analysis
mend (from latin mendum, meaning a fault, blemish, or error). acious (from latin -āx, -ācis, forming adjectives meaning 'full of' or 'inclined to').