confabulate (v.)

"talk familiarly together, chat," 1610s, from confabulatus, past participle of Latin confabulari "to converse together," from assimilated form of com "with, together" (see con-) + fabulari "to talk, chat," from fabula "a tale" (from PIE root *bha- (2) "to speak, tell, say"). Psychiatric sense is from 1924. Earlier verb was confable (c. 1500), from Old French confabuler. Related: Confabulated; confabulating; confabulator; confabulatory.