1. (a.) Given to deception or falsehood; lying; as, a mendacious person\.

2. (a.) False; counterfeit; containing falsehood; as, a mendacious statement.

deceitful dishonest equivocal equivocating erroneous fallacious FALSE fibbing forsworn knavish lying paltering perjured prevaricating roguish shifty spurious truthless untruthful unveracious wrong