Mendacious
Part of speech: adjective
Definition: lying, untruthful or dishonest false or untrue
Untruthful
Part of speech: adjective
Definition: Not giving the truth; providing untrue facts; lying.Pertaining to falsehood; corrupt; dishonest.
Mendacious as an adjective is lying, untruthful or dishonest while Untruthful as an adjective is not giving the truth; providing untrue facts; lying.
Part of speech: adjective
Definition: lying, untruthful or dishonest false or untrue
Part of speech: adjective
Definition: Not giving the truth; providing untrue facts; lying.Pertaining to falsehood; corrupt; dishonest.
We hope you now know whether to use Mendacious or Untruthful in your sentence.