This rare participial form appears in Jeremiah's condemnation of Judah's moral corruption, describing lustful behavior. The exact meaning remains disputed—some connect it to being well-fed or sleek like pampered horses, others to weighing or being equipped, still others to sexual readiness. The context clearly involves sexual metaphor, comparing Judah's idolatry to horses in heat. Ancient versions struggled with the word, suggesting its meaning was uncertain even early. The passage's vivid imagery of moral corruption outweighs the precise lexical value of this difficult term.