Source : Webster's Revised Unabridged Dictionary (1913)

Disqualify \Dis*qual"i*fy\, v. t. [imp. & p. p. {Disqualified};
   p. pr. & vb. n. {Disqualifying}.]
   1. To deprive of the qualities or properties necessary for
      any purpose; to render unfit; to incapacitate; -- with for
      or from before the purpose, state, or act.

            My common illness disqualifies me for all
            conversation; I mean my deafness.     --Swift.

            Me are not disqualified by their engagements in
            trade from being received in high society.
                                                  --Southey.

   2. To deprive of some power, right, or privilege, by positive
      restriction; to disable; to debar legally; as, a
      conviction of perjury disqualifies a man to be a witness.

Source : WordNet®

disqualified
     adj 1: disqualified by law or rule or provision
     2: barred from competition for violation of rules; "a
        disqualified player"

disqualify
     v 1: make unfit or unsuitable; "Your income disqualifies you"
          [syn: {unfit}, {indispose}] [ant: {qualify}]
     2: declare unfit; "She was disqualified for the Olympics
        because she was a professional athlete" [ant: {qualify}]
     [also: {disqualified}]

disqualified
     See {disqualify}