The word colloquist refers to someone who participates in a conversation or a dialogue. Sometimes, you might need to use a different word to convey the same meaning. For instance, the term interlocutor denotes a person who takes part in a conversation, especially a formal one. Similarly, conversationalist refers to someone who enjoys talking or is skilled at making conversations. In contrast, a debater, as the name suggests, is someone who engages in formal arguments or debates. Alternatively, a communicator or a talker can also be used instead of colloquist to refer to someone who communicates effectively or engages in discussions.