Related to Disagreer: dissenter


n.1.One who disagrees.
References in periodicals archive ?
* Playing Roles in Groups: By assigning group members to interesting and challenging roles within group discussions (for example, idea proposer, disagreer, devil's advocate, questioner, naysayer, example giver, clarifier, tension reliever, discussion leader, note taker, online resource finder, or conflict negotiator), you can use this activity to add diversity to course discussions.