Similar word to horrible:

abhorrent, abominable, appalling, awful, beastly, cruel, detestable, disagreeable, disgusting, dreadful, eerie, execrable, fearful, frightful, ghastly, grim, grisly, gross, gruesome, heinous, hideous, loathsome, lousy, lurid, mean, nasty, obnoxious, offensive, repellent, revoltin