Synonyms of untruthful

2 Syllables

falser, falsest, sneaking, bluffing, shiftier, crooked, untrue, roguish, corrupt, tricky, truthless, cheating, lying, shiftiest, shifty, faithless, shady, sneaky, false

3 Syllables

deceitful, two-faced, misleading, two-timing, perjurious, phoniness, unfounded, fraudulent, deceiving, mendacious

4 Syllables

untrustworthy, underhanded, double-dealing, deceptive, insincere, counterfactual, unconverted, double-crossing

5 Syllables

disreputable

6 Syllables

prevaricatory

7 Syllables

misrepresentative