Discusser

dis·cuss  (d-sks)

tr.v. dis·cussed, dis·cuss·ing, dis·cuss·es

1. To speak with another or others about; talk over.

2. To examine or consider (a subject) in speech or writing.

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[Middle English discussen, to examine, from Anglo-Norman discusser, from Latin discussus, past participle of discutere, to break up : dis-, apart; see dis- + quatere, to shake; see kwt- in Indo-European roots.]

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dis·cussa·ble, dis·cussi·ble adj.

dis·cusser n.

Synonyms: discuss, argue, debate, dispute, contend
These verbs mean to talk with others in an effort to reach agreement, to ascertain truth, or to convince. Discuss involves close examination of a subject with interchange of opinions: My therapist discussed my concerns with my parents.
Argue emphasizes the presentation of facts and reasons in support of a position opposed by others: The lawyer argued the plaintiff's case.
Debate involves formal, often public argument: The candidates debated the campaign issues.
Dispute implies differences of opinion and usually sharp argument: The senators disputed over increases in the proposed budget.
To contend is to strive in debate or controversy: She contended that her theory was easily proven.