One who debates or participates in a debate; one who argues.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "debater" in a sentence
"What makes Christopher Hitchens such a capable and persuasive debater is a mixture of his ides, arguments, and charm."
"She'd learn what a great debater is really all about."
"Kossuth early made himself known as a debater, and gradually won his way upward, and became associated with the leading men of the Liberal party, many of whom were among the proudest and richest of the"