Twaddle
Part of speech: noun
Definition: Empty or silly idle talk or writing; nonsense. A twaddler.
Part of speech: verb
Definition: To talk or write nonsense; to prattle.
Prate
Part of speech: noun
Definition: Talk to little purpose; trifling talk; unmeaning loquacity.
Part of speech: verb
Definition: To talk much and to little purpose; to chatter; to be loquacious; to speak foolishly; to babble.