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A prattler is the type of person who tends to talk on and on about themselves and the mundane details of their lives. A prattler is the most inane kind of conversationalist.
Jon: Don't sit me next to her please! She's the worst person to end up sitting beside at a dinner party.

Jan: I know. She's a real prattler.
by Gideous March 23, 2009
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