喋喋喃喃 (ちょうちょうなんなん) Japanese meaning | KotomoraMeanings
1
noun, noun or participle which takes 'suru', taru-adjective, adverb taking the 'to' particle
billing and cooing; whispering intimately
archaicyojijukugo (four-character idiom)
Archaic yojijukugo describing lovers talking softly and at length in whispers. Modern Japanese would more naturally use いちゃいちゃ話す or ささやき合う.
In classical literature, scenes of lovers whispering intimately often appear.