Definition of exacts:
(adj) :
Precisely agreeing with a standard, a fact, or the truth; perfectly conforming; neither exceeding nor falling short in any respect.
(adj) :
Habitually careful to agree with a standard, a rule, or a promise; accurate; methodical; punctual.
(adj) :
Precisely or definitely conceived or stated; strict.
(adv) :
exactly
(v) :
(ambitransitive) To demand and enforce the payment or performance of, sometimes in a forcible or imperious way.
(v) :
(transitive) To make desirable or necessary.