unreliable Synonyms

dubious rocky erratic questionable unstable fallible precarious uncertain shaky unfaithful doubtful untrustworthy fickle volatile inaccurate undependable suspect inconsistent slippery unpredictable treacherous capricious unsound variable untrue vacillating unreputable unassured temperamental tenuous tottery traitorous treasonable uneven troublesome trustless weak wild-cat wrong unauthentic unsupported iffy fly-by-night hit-or-miss unsure unproven unsafe undependably unreproducible unsubstantiated