exertion Definition

exert
verb exerted, exerting

1. To bring something into use or action forcefully.

Example: exert one's authority
Thesaurus: expend, apply, use, utilize, employ, exercise, wield.
2. To force oneself to make a strenuous, especially physical, effort.

Form: exert oneself

Derivative: exertion
noun

Strenuous, especially physical, effort
Thesaurus: endeavour, attempt, travail, struggle, effort, perseverance, assiduity, toil, labour, work, application, utilization.

Etymology: 17c: from Latin exserere, exsertum to thrust out.