Horror  —n. 1 painful feeling of loathing and fear. 2 a (often foll. By of) intense dislike. B (often foll. By at) colloq. Intense dismay. 3 a person or thing causing horror. B colloq. Bad or mischievous person etc. 4 (in pl.; prec. By the) fit of depression, nervousness, etc. —attrib. Adj. (of films etc.) Designed to interest by arousing feelings of horror.