Sentence:  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 <WSD>imprecation</WSD>. "May Gawd curse her forever," she shrieked. 
Meaning of the word marked with <WSD> tags:  The act of imprecating, or invoking evil upon someone; a prayer that a curse or calamity may befall someone.