(a.) Deserving of censure; faulty; culpable; reprehensible; censurable; blameworthy.

aberrant abhorrent abject abnormal accursed arrant atrocious awful bad base beastly beggarly below contempt beneath contempt black blamable blameworthy brutal cheesy contemptible criminal crude crummy cursed damnable dark debased degraded delinquent deplorable depraved despicable detestable deviant dire dirty disagreeable disgraceful disgusting distasteful dreadful egregious enormous evil execrable fetid filthy flagitious flagrant forbidding foul frightful fulsome grave grievous gross hardly the thing hateful heinous horrible horrid ignoble ignominious illegal improper in bad taste inappropriate incorrect indecorous infamous iniquitous knavish lamentable little loathsome lousy low low-down lumpen malodorous mangy mean measly mephitic miasmal miasmic miserable monstrous nasty naughty nauseating nauseous nefarious noisome not done not the thing notorious noxious objectionable obnoxious obscene odious off-base off-color offensive out-of-line outrageous paltry peccant petty pitiable pitiful poky poor rank rebarbative regrettable repellent reprehensible reprobate reptilian repugnant repulsive revolting rotten sacrilegious sad scabby scandalous schlock scrubby scruffy scummy scurvy shabby shameful shameless shocking shoddy sickening sinful small sordid squalid stinking terrible too bad unclean undue unfit unfitting unforgivable unlawful unmentionable unpardonable unpleasant unrighteous unseemly unspeakable unsuitable unworthy vicious vile villainous wicked woeful worst worthless wretched wrong wrongful