1. one who trounces; one who defeats decisively or beats severely

Examples

• The heavyweight champion was known as a fierce trouncer in the ring.
• Our team's star player became the trouncer of every opponent this season.
• The debate team captain was a skilled trouncer who rarely lost an argument.
• He earned his reputation as a trouncer after winning five consecutive matches.
• The chess master was considered the greatest trouncer of his generation.
• She proved to be an unexpected trouncer in the tennis tournament.