adjective
dishonest, disloyal
Synonyms: betraying, catchy, deceitful, deceptive, double-crossing, double-dealing, duplicitous, faithless, false, false-hearted, fly-by-night, insidious, misleading, perfidious, recreant, shifty, slick, slippery, snake in the grass, traitorous, treasonable, tricky, two-faced, two-timing, undependable, unfaithful, unloyal, unreliable, untrue, untrustworthy
Antonyms: forthright, honest, loyal, true
adjective
dangerous
Synonyms: alarming, chancy, deceptive, difficult, dissembled, faulty, hairy, hazardous, icy, insecure, jeopardous, menacing, misleading, ominous, perilous, precarious, risky, shaky, slippery, ticklish, tricky, undependable, unhealthy, unreliable, unsafe, unsound, unstable, wicked
Antonyms: harmless, untreacherous