S: (adj) atrocious, flagitious, grievous, monstrous (shockingly brutal or cruel) "murder is an atrocious crime"; "a grievous offense against morality"; "a grievous crime"; "no excess was too monstrous for them to commit"
S: (adj) grotesque, monstrous (distorted and unnatural in shape or size; abnormal and hideous) "tales of grotesque serpents eight fathoms long that churned the seas"; "twisted into monstrous shapes"