The Collaborative International Dictionary of English v.0.48:

Exact \Ex*act"\, v. t. [imp. & p. p. Exacted; p. pr. & vb. n.
   Exacting.] [From L. exactus, p. p. of exigere; or fr. LL.
   exactare: cf. OF. 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.
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         He said into them, Exact no more than that which is
         appointed you.                           --Luke. iii.
                                                  13.
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         Years of servise past
         From grateful souls exact reward at last --Dryden.
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         My designs
         Exact me in another place.               --Massinger.
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The Collaborative International Dictionary of English v.0.48:

Exact \Ex*act"\, a. [L. exactus precise, accurate, p. p. of
   exigere to drive out, to demand, enforce, finish, determine,
   measure; ex out + agere to drive; cf. F. 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.
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            I took a great pains to make out the exact truth.
                                                  --Jowett
                                                  (Thucyd. )
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   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.
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   3. Precisely or definitely conceived or stated; strict.
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            An exact command,
            Larded with many several sorts of reason. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Exact \Ex*act"\, v. i.
   To practice exaction. [R.]
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         The anemy shall not exact upon him.      --Ps. lxxxix.
                                                  22.
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