1. a person who talks foolishly or at tedious length about unimportant matters
Usage: often mildly derogatory

Examples

• The office prattler kept everyone from getting work done with his constant chatter.
• She was known as a prattler who could talk for hours about nothing important.
• The meeting was delayed by a prattler who wouldn’t stop sharing irrelevant stories.
• Don’t be such a prattler—get to the point.
• The teacher had to quiet the prattler in the back row.
• He’s a harmless prattler who means well but talks too much.