- nefarious
- adj1. wicked, evil, sinful, iniquitous, Archaic. facinorous, Obs. scelerous; villainous, flagitious, heinous, infamous, notorious, Rare. nefast; black-hearted, sinister, arrant, ignoble; bad, base, vile, foul, low, mean, odious, obnoxious; abominable, execrable, horrible, horrid, atrocious, grievous; ghastly, grim, dire, black, dreadful; hideous, grisly, gruesome, unspeakable; damnable, damnatory, accursed, cursed; maleficent, malefic, malevolent, ill-intentioned, evil-minded; demonic, demoniac, diabolic, devilish, fiendish, satanic, hellish, infernal; unholy, unrighteous, unblest, unsanctified, unhallowed, unconsecrated.2. perfidious, treacherous, insidious, traitorous; unscrupulous, unprincipled, crooked, dishonorable; blackguardly, scoundrelly, thievish, ruffianly; criminal, wrong, reprehensible, felonious, lawless; unregen-erate, unrepentant, impenitent, obdurate, incorrigible; unpardonable, unforgivable; degenerate, corrupt, Rare. turpid, depraved; immoral, dissolute, profligate, reprobate, abandoned, dissipated; opprobrious, disgraceful, shameful; scandalous, shocking, outrageous; contemptible, scurvy, abhorrent, loathsome, hateful, detestable, despicable.
A Note on the Style of the synonym finder. 2014.