prattle

[1]	prate , babble , blather/blether , blither , gibber , jabber , jibber-jabber , palaver , tattle , twaddle , gabble , chatter , patter , drivel , twitter , rattle on , go on (and on) , maunder , (Brit) natter , (Colloq) witter (on) , gas , gab , spout , gush , run (on) , (US) run off at the mouth , (Slang) jaw , ya(c)k , ya(c)kety-ya(c)k , shoot off one's mouth
[2]	chatter , piffle , palaver , prate , tittle-tattle , twaddle , clack , maunder , blab , gibber , tattle , blabber , gabble

[1]	prate , idle talk , blether , chin music
[2]	prate , prating , babble , babbling , blather/blether , blathering/blethering , gibber , gibbering , jabber , jabbering , palaver , palavering , tattle , tattling , twaddle , chatter , chattering , gabble , gabbling , patter , drivel , twitter , twittering , rattling on , going on , maundering , cackle , (US) jibber-jabbering , twattle , clack , (Colloq) gas , gab , running off at the mouth , (Slang) jawing , ya(c)kety-ya(c)k
[3]	jabberwocky , gobbledegook/gobbledygook , mumbo-jumbo , rubbish , balderdash , (stuff and) nonsense , humbug , bunkum , tommy-rot , trash , rot , foolishness , (Colloq) pish and tush , hot air , flapdoodle , rigmarole/rigamarole , bunk , piffle , moonshine , poppycock , claptrap , bull , hogwash , swill , (Brit) tosh , fiddle-faddle , boloney , (Mainly US) garbage , horse feathers , (Slang) crap , hooey , guff , (Colloq) (Slang) bullshit , (US) crock (of shit)