The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, v. t. [imp. & p. p. Slighted; p. pr. & vb. n.
   Slighting.]
   To disregard, as of little value and unworthy of notice; to
   make light of; as, to slight the divine commands. --Milton.
   [1913 Webster]

         The wretch who slights the bounty of the skies.
                                                  --Cowper.
   [1913 Webster]

   To slight off, to treat slightingly; to drive off; to
      remove. [R.] -- To slight over, to run over in haste; to
      perform superficially; to treat carelessly; as, to slight
      over a theme. "They will but slight it over." --Bacon.
      [1913 Webster]

   Syn: To neglect; disregard; disdain; scorn.

   Usage: Slight, Neglect. To slight is stronger than to
          neglect. We may neglect a duty or person from
          inconsiderateness, or from being over-occupied in
          other concerns. To slight is always a positive and
          intentional act, resulting from feelings of dislike or
          contempt. We ought to put a kind construction on what
          appears neglect on the part of a friend; but when he
          slights us, it is obvious that he is our friend no
          longer.
          [1913 Webster]

                Beware . . . lest the like befall . . .
                If they transgress and slight that sole command.
                                                  --Milton.
          [1913 Webster]

                This my long-sufferance, and my day of grace,
                Those who neglect and scorn shall never taste.
                                                  --Milton.
          [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "slighted":
   abandoned, deserted, disregarded, half-done, ignored, laid aside,
   left undone, missed, neglected, omitted, overlooked, passed by,
   passed over, passed up, pigeonholed, put aside, shunted, sidelined,
   sidetracked, unasked, unattended to, uncared-for, unchaperoned,
   unconsidered, undone, unregarded, unsolicited, untended,
   unwatched