Synonyms to untrustworthy

furtive, artful, back-door, backstairs, calculating, chiseling, clandestine, collusive, conspiratorial, covert, covinous, crafty, cunning, deceitful, doggo, false, falsehearted, feline, finagling, foxy, fraudulent, guileful, hidden, hidden out, hidlings, hole-and-corner, hugger-mugger, in ambush, in hiding, in the wings, indirect, insidious, lurking, on tiptoe, private, privy, prowling, pussyfoot, pussyfooted, quiet, scheming, secret, secretive, sharp, shifty, skulking, slinking, slinky, slippery, sly, sneaking, sneaky, stealing, stealthy, surreptitious, treacherous, trickish, tricky, two-faced, under cover, under the table, under-the-counter, under-the-table, undercover, underground, underhand, underhanded, unobtrusive, waiting concealed, wily, tentative, acting, ad hoc, ad interim, alternate, alternative, ambling, analytic, apprehensive, awkward, backup, band-aid, blankminded, callow, canny, careful, cautious, circumspect, claudicant, counterfeit, crawling, creeping, creeping like snail, cut-and-try, dangerous, deliberate, demurring, desultory, determined, diffident, discreet, disinclined, dum