An expenditure of physical or mental effort.

plural of exertion

Of or pertaining to exertion.

present participle of exert

To put in vigorous action. / To make use of, to apply, especially of something non-material.

simple past tense and past participle of exert

Third-person singular simple present indicative form of exert

plural of exertment

(archaic) exertion

Having power or a tendency to exert; using exertion.