Heinous

Part of speech: adjective (a.)

Hateful; hatefully bad; flagrant; odious; atrocious; giving great great offense; -- applied to deeds or to character. It were most heinous and accursed sacrilege. Hooker. How heinous had the fact been, how deserving Contempt! Milton.

Synonyms: Monstrous; flagrant; flagitious; atrocious. Hei"nous*ly, adv. Hei"nous*ness, n.