the GNU version of the Collaborative International Dictionary of English
n. One who prattles.
The Century Dictionary and Cyclopedia
n. One who prattles; a puerile or trifling talker.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone who speaks in a childish way
Word Usage
""prattler," who persists in believing in his own innocence in spite of the unmistakable judgment of his just Creator and the unanimous testimony of his candid friends."