blithering
1. [ adjective ] talking idly or incoherently
Synonyms: babbling gabbling jabbering blathering
Examples:

"blithering (or blathering) idiot" "jabbering children" "gabbling housewives" "a babbling hospital inmate"

Related terms: voluble
Similar spelling:   blathering
  blither
  blether
  blather
  blotter
  Blatter
  blatherskite
  Blattaria
  bluethroat