disputant

名词 disputant:

1. a person who disputes; who is good at or enjoys controversy
   同义词：controversialist, eristic

dis.pu.tant

adj.（形容词）
Engaged in dispute or argument.
参与辩论的，参与争论的
n.（名词）
One engaged in a dispute.
争论者；辩论者：参与争论的人