Synonyms of untrustworthy

1 Syllable

fink, sharp

2 Syllables

fickle, disloyal, wiggly, sneakier, dubious, crooked, untrue, corrupt, tricky, dodgy, truthless, devious, trustless, unloyal, shifty, faithless, shady, sneaky, false, sneakiest

3 Syllables

deceitful, unstable, treacherous, capricious, dishonest, unsure, fair-weather, guileful, two-faced, two-timing, untruthful, foresworn, blackguardly, opprobious, fallible, tottering, derelict, untrusty, perfidious, conniving, scoundrelly, tottery, slippery, fly-by-night, unsafe, unfaithful, moonlighting

4 Syllables

questionable, unreliable, double-dealing, falsehearted, mythomaniac, unconverted, uncareful, unassured, profiteering

5 Syllables

dishonorable, irresponsible, undependable, adulterine