Exertion

n.

1.

The act of exerting, or putting into motion or action; the active exercise of any power or faculty; an effort, esp. a laborious or perceptible effort; as, an exertion of strength or power; an exertion of the limbs or of the mind; it is an exertion for him to move, to-day.

Noun

1.

exertion - use of physical or mental energy; hard work; "he got an A for effort"; "they managed only with great exertion" Synonyms: elbow grease, effort, travail, sweat

action, active use, activity, appliance, application, assiduity, assiduousness, consumption, determination, diligence, drive, elbow grease, employ, employment, endeavor, exercise, exercising, good use, hard pull, hard usage, hard use, ill use, industry, misuse, operation, pains, push, resolution, rough usage, sedulity, sedulousness, striving, struggle, toil, trouble, usage, use, using up, while, work, wrong use