undependable Synonyms

unreliable not reliable variable vacillating untrue unstable unfaithful uncertain unassured unaccountable trustless treacherous traitorous temperamental volatile wavering untrusty unreproducible unsafe unpredictable unsure fly-by-night flakey dodgy duplicitous untrustworthy unsteady unsettled weak sporadic slippery shifty flighty fitful fickle false fallible faithless fair-weather erratic dubious disloyal deceitful changeful changeable fluctuant fluctuating shaky rocky questionable