Synonyms and related words :
abominable, arrant, atrocious, bad, base, black, blamable, blameworthy, criminal, damnable, dark, disgraceful, evil, execrable, flagitious, flagrant, foul, heinous, improper, indefensible, inexcusable, inexpiable, infamous, iniquitous, irremissible, knavish, low, monstrous, naughty, nefarious, peccant, rank, reprehensible, reprobate, scandalous, shameful, sinful, unallowable, unconscionable, unjustifiable, unpardonable, unreasonable, unspeakable, unwarrantable, unworthy, vicious, vile, villainous, wicked, wrong