Synonyms and related words :
abominable, arch, arrant, atrocious, bad, base, black, blackguardly, blamable, blameworthy, criminal, damnable, dark, deceitful, degraded, devilish, disgraceful, elfish, elvish, evil, execrable, flagitious, flagrant, foolish, foul, full of mischief, heinous, high-spirited, impish, improper, infamous, iniquitous, low, lying, mendacious, mischief-loving, mischievous, monstrous, naughty, nefarious, notorious, peccant, playful, prankish, pranksome, pranky, puckish, rank, rascally, recreant, reprehensible, reprobate, roguish, scampish, scandalous, scapegrace, scoundrelly, shameful, shifty, sinful, sportive, trickish, tricksy, unforgivable, unpardonable, unspeakable, untruthful, unworthy, vicious, vile, villainous, waggish, wicked, wrong