viperous

of or pertaining to a viper

Đồng nghĩa: viperish

venomous, malicious or treacherous

Đồng nghĩa: reptilian, reptitious, viperish, abandoned, arrant, bad, bad apple, bad seed, baleful, scurrilous, baneful, base, black-hearted, dark, deleterious, demonic, depraved, despicable, detrimental, devilish, diabolical, evil, evil-minded, facinorous, flagitious, harmful, heinous, ill-intentioned, ill-natured, immoral, incorrigible, iniquitous, iniquous, injurious, knavish, malefic, maleficent, malevolent, malicious, malign, malignant, naughty, nefarious, niddering, nidering, niding, nithing, no-good, peccaminous, pernicious, reprehensible, reprobate, satanic, scathful, sinful, sinister, sordid, sullen, ungodly, unholy, vicious, vile, villainous, wicked, wrong, booky, dastardly, disleal, disloyal, double-crossing, double-dealing, double-faced, double-hearted, doublehearted, faithless, false, falseheart, false-hearted, guiled, guileful, hollow-hearted, illoyal, infidelitous, insidious, Judaslike, Judasly, nonfaithful, perfidious, proditorious, proditory, Punic, ratlike, recreant, renegade, reptilian, reptitious, swike, traitorish, traitorlike, traitorly, traitorous, traitorsome, treacherous, treachersome, trothless, unfaithful, unleal, unloyal, unsteadfast, untrue, viperish, viperous