The Collaborative International Dictionary of English v.0.48:

malice \mal"ice\ (m[a^]l"[i^]s), n. [F. malice, fr. L. malitia,
   from malus bad, ill, evil, prob. orig., dirty, black; cf. Gr.
   me`las black, Skr. mala dirt. Cf. Mauger.]
   1. Enmity of heart; malevolence; ill will; a spirit
      delighting in harm or misfortune to another; a disposition
      to injure another; a malignant design of evil. "Nor set
      down aught in malice." --Shak.
      [1913 Webster]

            Envy, hatred, and malice are three distinct passions
            of the mind.                          --Ld. Holt.
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   2. (Law) Any wicked or mischievous intention of the mind; a
      depraved inclination to mischief; an intention to vex,
      annoy, or injure another person, or to do a wrongful act
      without just cause or cause or excuse; a wanton disregard
      of the rights or safety of others; willfulness.
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   Malice aforethought or Malice prepense, malice previously
      and deliberately entertained.
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   Syn: Spite; ill will; malevolence; grudge; pique; bitterness;
        animosity; malignity; maliciousness; rancor; virulence.

   Usage: See Spite. -- Malevolence, Malignity,
          Malignancy. Malice is a stronger word than
          malevolence, which may imply only a desire that evil
          may befall another, while malice desires, and perhaps
          intends, to bring it about. Malignity is intense and
          deepseated malice. It implies a natural delight in
          hating and wronging others. One who is malignant must
          be both malevolent and malicious; but a man may be
          malicious without being malignant.
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                Proud tyrants who maliciously destroy
                And ride o'er ruins with malignant joy.
                                                  --Somerville.
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                in some connections, malignity seems rather more
                pertinently applied to a radical depravity of
                nature, and malignancy to indications of this
                depravity, in temper and conduct in particular
                instances.                        --Cogan.
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The Collaborative International Dictionary of English v.0.48:

Malice \Mal"ice\, v. t.
   To regard with extreme ill will. [Obs.]
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "malice":
   Anglophobia, Russophobia, abhorrence, abomination, animosity,
   animus, antagonism, anti-Semitism, antipathy, aversion, bane,
   belligerence, bigotry, bile, bitchiness, bitterness, clash,
   clashing, collision, conflict, contention, cussedness, despite,
   despitefulness, detestation, devilment, devilry, deviltry, dislike,
   down, enmity, evil intent, execration, friction, grudge,
   harmfulness, hate, hatefulness, hatred, hostility, ill will,
   iniquitousness, invidiousness, loathing, maleficence, malevolence,
   malice aforethought, malice prepense, maliciousness, malignance,
   malignancy, malignity, meanness, misandry, misanthropy, misogyny,
   nastiness, noxiousness, odium, orneriness, poison, quarrelsomeness,
   race hatred, racism, repugnance, resentment, spite, spitefulness,
   spleen, umbrage, venom, vials of hate, vials of wrath, wickedness,
   xenophobia