deipno-, deipn-

(Greek: dinner; dining)

A reference to dining and diplomacy.
An abnormal fear of dining, dinner conversation, and of carrying on a conversation while eating.

Individuals who have this fear usually eat their meals in silence and request silence from their companions at the table.

deipnosophist (s) (noun), deipnosophists (pl)
Someone who is a specialist in the art of dining and who is an adept conversationalist at the dinner table: The term deipnosophist comes from the title of the Greek work of Atheneus, in which a number of learned men are represented as dining together and discussing subjects that range from the dishes in front of them to literary criticism and miscellaneous topics of various descriptions.