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.]
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            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.]
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            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.
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