prat·tle 
(prătl)
(prătl)v. prat·tled, prat·tling, prat·tles
v.intr.
To talk or chatter idly or meaninglessly; babble or prate.
v.tr.
To utter or express by chattering foolishly or babbling.
n.
Idle or meaningless chatter; babble.
[ Frequentative of PRATE.]
prattler n.
prattling·ly adv.