The Collaborative International Dictionary of English v.0.48:

Abrogate \Ab"ro*gate\, v. t. [imp. & p. p. Abrogated; p. pr. &
   vb. n. Abrogating.] [L. abrogatus, p. p. of abrogare; ab +
   rogare to ask, require, propose. See Rogation.]
   1. To annul by an authoritative act; to abolish by the
      authority of the maker or his successor; to repeal; --
      applied to the repeal of laws, decrees, ordinances, the
      abolition of customs, etc.
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            Let us see whether the New Testament abrogates what
            we so frequently see in the Old.      --South.
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            Whose laws, like those of the Medes and Persian,
            they can not alter or abrogate.       --Burke.
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   2. To put an end to; to do away with. --Shak.
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   Syn: To abolish; annul; do away; set aside; revoke; repeal;
        cancel; annihilate. See Abolish.
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