The Collaborative International Dictionary of English v.0.48:

Reprove \Re*prove"\ (r?-pr??v"), v. t. [imp. & p. p. Reproved
   (-pr??vd"); p. pr. & vb. n. Reproving.] [F. r['e]prouver,
   OF. reprover, fr. L. reprobare. See Reprieve, Reprobate,
   and cf. Reproof.]
   1. To convince. [Obs.]
      [1913 Webster]

            When he is come, he will reprove the world of sin,
            and of righteousness, and of judgment. --John xvi.
                                                  9.
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   2. To disprove; to refute. [Obs.]
      [1913 Webster]

            Reprove my allegation, if you can.    --Shak.
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   3. To chide to the face as blameworthy; to accuse as guilty;
      to censure.
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            What if thy son
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            Prove disobedient, and, reproved, retort,
            "Wherefore didst thou beget me?"      --Milton.
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   4. To express disapprobation of; as, to reprove faults.
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            He neither reproved the ordinance of John, neither
            plainly condemned the fastings of the other men.
                                                  --Udall.
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   Syn: To reprehend; chide; rebuke; scold; blame censure.

   Usage: Reprove, Rebuke, Reprimand. These words all
          signufy the expression of disapprobation. To reprove
          implies greater calmness and self-possession. To
          rebuke implies a more excited and personal feeling. A
          reproof may be administered long after the offience is
          committed, and is usually intended for the reformation
          of the offender; a rebuke is commonly given at the
          moment of the wrong, and is administered by way of
          punishment and condemnation. A reprimand proceeds from
          a person invested with authority, and is a formal and
          offiscial act. A child is reproved for his faults, and
          rebuked for his impudence. A military officer is
          reprimanded for neglect or violation of duty.
          [1913 Webster]

WordNet (r) 3.0 (2006):

reprove
    v 1: take to task; "He admonished the child for his bad
         behavior" [syn: admonish, reprove]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "reprove":
   admonish, bring to book, call down, call to account, chasten,
   chastise, chide, correct, have words with, lecture, lesson,
   objurgate, rack, rate, rebuke, reprehend, reprimand, scold,
   set down, set straight, spank, straighten out, take down,
   take to task, upbraid