debater

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone who engages in debate
• Syn:
arguer
• Derivationally related forms:
argue (for: arguer), debate
• Hypernyms:
disputant, controversialist, eristic
• Hyponyms:
devil's advocate, rebutter, disprover, refuter, confuter, wrangler