Imprecation Definition (Imprecations, Curse, Fierce) @ WeirdPet.com

From Latin imprecātio (“‘calling down of curses’”) < imprecor (“‘call down, invoke’”) < in- (“‘towards’”) + precor (“‘pray’”).

Singular imprecation

imprecation (plural imprecations)

The act of imprecating, or invoking evil upon someone; a prayer that a curse or calamity may befall someone.
- 1893, Stephen Crane, Maggie, Girl of the Streets, ch. 10:
  
  Her son turned to look at her as she reeled and swayed in the middle of the room, her fierce face convulsed with passion, her blotched arms raised high in imprecation. "May Gawd curse her forever," she shrieked.
A curse.
- 1839, Charles Dickens, Oliver Twist, ch. 3:
  
  Mr. Gamfield growled a fierce imprecation on the donkey generally, but more particularly on his eyes; and, running after him, bestowed a blow on his head.