chitter-chatter
Light, trivial conversation
Chitter-chatter is light, trivial conversation—idle talk without substance.
The reduplication emphasizes the scattered, bird-like quality of such speech: The room was full of chitter-chatter about weekend plans.
The word carries a mildly dismissive tone, suggesting the talk isn't worth much attention.
gossip
Informal talk spreading rumors
gabbing · chitchat · small talk · jabber · babble · blather · yapping · yammering · tittle-tattle · idle talk
twittering
Light, rapid vocal sounds
tittering · murmuring · buzzing · humming · pattering · rustling · whispering · burbling · gibbering · jabbering
chitter-chatterintellectual discourse
Serious exchange of ideas
deliberation · formal address · negotiation · lecture · sermon
chitter, chatter, chittering, chattering, chittered, chattered, chat, chatty, chattier