horrify v. + Add to list US //ˈhɔɹəˌfaɪ// UK //hˈɒɹɪfˌaɪ// hor·ri·fy SynonymsEtymology Synonyms alarmappaldismayOrigin From horror + -ify, or borrowed from Latin horrificare (cf. French horrifier). 1791, in form horrifying.