Part of speech:
The definition of mendacious describes a dishonest person or thing.
Engaging in fraud; deceitful.
Tending to deceive; apt to lie or cheat
Uttering falsehood; dishonest or deceitful.
Deceiving or intended to deceive
The definition of dishonest is a person who cheats or lies.
Tending to mislead; deceptive.
Seeming to be good, sound, correct, logical, etc. without really being so; plausible but not genuine
Not faithful or loyal
Not promising; likely to fail.
Not straightforward; dishonest; swindling
The definition of lying is not telling the truth.
Running contrary to the facts:
The definition of spurious is something that is not true.
Contrary to conscience, morality, or law:
Characterized by truth; not false:
Corresponding to reality; true.
Find another word for untruthful. In this page you can discover 24 synonyms, antonyms, idiomatic expressions, and related words for untruthful, like: insincere, mendacious, fraudulent, deceitful, false, deceptive, dishonest, misleading, specious, untrue and unlikely.