Webster's Revised Unabridged Dictionary · 1913

Exact

Exact , adjective

[Latin exactus precise, accurate, past participle of exigere to drive out, to demand, enforce, finish, determine, measure; ex out + agere to drive; compare French exact. See Agent, Act.]

1.
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.
I took a great pains to make out the exact truth. — Jowett (Thucyd. )
2.
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.
I see thou art exact of taste. — Milton
3.
Precisely or definitely conceived or stated; strict.
An exact command, Larded with many several sorts of reason. — Shakespeare

Exact , transitive verb

[From Latin exactus, past participle of exigere; or from Late Latin exactare: compare Old French exacter. See Exact, a.]

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.
He said into them, Exact no more than that which is appointed you. — Luke. iii. 13
Years of servise past From grateful souls exact reward at last — Dryden
My designs Exact me in another place. — Massinger

Exact , intransitive verb

To practice exaction. [Rare]
The anemy shall not exact upon him. — Bible (KJV) - Psalm lxxxix. 22