disputant

n. one who disputes, one who debates

Noun
1. a person who disputes; who is good at or enjoys controversy
(synonym) controversialist, eristic
(hypernym) person, individual, someone, somebody, mortal, human, soul
(hyponym) contester
(derivation) quarrel, dispute, scrap, argufy, altercate

n. disputant, one who disputes, one who debates

v. fight, quarrel, tell off; compete; contest, contend

(v. i.)
Disputing; engaged in controversy.
  

(n.)
One who disputes; one who argues in opposition to another; one appointed to dispute; a controvertist; a reasoner in opposition.