Interlocutor :: Interlocutor (n.) One who takes part in dialogue or conversation; a talker, interpreter, or questioner..
Interlocutory :: Interlocutory (a.) Consisting of, or having the nature of, dialogue; conversational..
Interlocutory :: Interlocutory (a.) Intermediate; not final or definitive; made or done during the progress of an action.
Locutory :: Locutory (n.) A room for conversation; especially, a room in monasteries, where the monks were allowed to converse..
Prolocutor :: Prolocutor (n.) The presiding officer of a convocation.