Precisely agreeing with a standard, a fact, or the truth;
perfectly conforming; neither exceeding nor falling short in any
respect; true; correct; precise; as, the clock keeps exact time; he
paid the exact debt; an exact copy of a letter; exact accounts.

Habitually careful to agree with a standard, a rule, or a
promise; accurate; methodical; punctual; as, a man exact in observing
an appointment; in my doings I was exact.

Precisely or definitely conceived or stated; strict.

To demand or require authoritatively or peremptorily, as a
right; to enforce the payment of, or a yielding of; to compel to yield
or to furnish; hence, to wrest, as a fee or reward when none is due; –
followed by from or of before the one subjected to exaction; as, to
exact tribute, fees, obedience, etc., from or of some one.

To practice exaction.