the word 'sprinter' is a modern english agent noun formed from the verb 'sprint'. the verb 'sprint' itself entered english in the late 16th century, likely from a scandinavian source such as old norse 'spretta', meaning 'to jump up, burst forth'. this original sense of a sudden, explosive burst of motion evolved into the specific athletic meaning of running at full speed over a short distance. by adding the agent suffix '-er', common in english since old english times, 'sprinter' literally denotes 'one who sprints', a person who specializes in these short, maximal-effort races.

Structure: sprint (run at full speed) + er (agent noun suffix) 'sprint' is of scandinavian origin (related to old norse 'spretta' meaning 'to jump up, burst forth'), functioning as the verb root. 'er' is from old english '-ere', an agent noun suffix indicating 'one who does something'.