The Oxford Thesaurus An A-Z Dictionary of Synonyms - atrocious adj.

1) cruel, wicked, iniquitous, villainous, fiendish, execrable, appalling, abominable, monstrous, inhuman, savage, barbaric, brutal, barbarous, heinous, dreadful, flagrant, flagitious, gruesome, grisly, ruthless, ghastly, unspeakable, horrifying, horrible, awful, infamous, infernal, satanic, hellish: They will never forget the atrocious crimes that took place during the war. 2) awful, terrible, bad, rotten, horrid, appalling, frightful, horrendous, Colloq lousy: That's the most atrocious book it has ever been my misfortune to review. Priscilla has atrocious taste.