imprecation
From Longman Dictionary of Contemporary Englishimprecationim‧pre‧ca‧tion /ˌɪmprɪˈkeɪʃən/ noun [countable] literary RUDE/IMPOLITEan offensive word or phrase, used when someone is very angryOrigin imprecation (1500-1600) Latin imprecatio, from precari “to pray”