Discur′sion, desultory talk: act of reasoning; Discur′sist, a disputer.
His flock scampered off in a fright, leaving him doggedly eyeing the disputer of his progress.
The dry logician and the disputer of words he could endure, though he never would waste much time with them.
dispute early 13c., from O.Fr. desputer (12c.), from L. disputare "examine, discuss, argue," from dis- "separately" + putare "to count, consider," originally "to prune" (see pave). Used in Vulgate in sense of "to argue, contend with words." Related: Disputed; disputing.