colloquy – for when you need to elevate your conversations

from col– together + –loquium speaking, from loqui to speak

  1. A talking together; a conversation, dialogue. Also, a written dialogue.
  2. A meeting for conference.
  3. Church blah blah.

All the modern dictionaries mention that it’s specific to elevated speech/conversation. Interesting that “colloquial” is used to mean common speech.

Definition of colloquy in the OED