implorator
/ˈɪmplərˌeɪtər/Definitions
1. noun
One who makes urgent or passionate pleas, often in a persistent or importunate manner.
“The distraught mother became an implorator at the school, demanding to know why her child had been expelled.”
2. noun
A person who implores or makes urgent requests, especially in a formal or ritualistic context.
“In the ancient ritual, the high priest served as the implorator, begging the gods for forgiveness.”