Piffle
Part of speech: noun
Definition: Nonsense, foolish talk.
Part of speech: verb
Definition: To act or speak in a futile, ineffective, or nonsensical manner. To waste, to fritter away.
Blab
Part of speech: verb
Definition: To tell tales; to gossip without reserve or discretion.
Part of speech: noun
Definition: One who blabs; a babbler; a telltale; a gossip or gossiper.