Source : Webster's Revised Unabridged Dictionary (1913)

Disable \Dis*a"ble\ (?; 277), v. t. [imp. & p. p. {Disabled}; p.
   pr. & vb. n. {Disabling}.]
   1. To render unable or incapable; to destroy the force,
      vigor, or power of action of; to deprive of competent
      physical or intellectual power; to incapacitate; to
      disqualify; to make incompetent or unfit for service; to
      impair.

            A Christian's life is a perpetual exercise, a
            wrestling and warfare, for which sensual pleasure
            disables him.                         --Jer. Taylor.

            And had performed it, if my known offense Had not
            disabled me.                          --Milton.

            I have disabled mine estate.          --Shak.

   2. (Law) To deprive of legal right or qualification; to
      render legally incapable.

            An attainder of the ancestor corrupts the blood, and
            disables his children to inherit.     --Blackstone.

   3. To deprive of that which gives value or estimation; to
      declare lacking in competency; to disparage; to
      undervalue. [Obs.] ``He disabled my judgment.'' --Shak.

   Syn: To weaken; unfit; disqualify; incapacitate.

Source : WordNet®

disabling
     adj 1: that cripples or disables or incapacitates; "a crippling
            injury" [syn: {crippling}, {incapacitating}]
     2: depriving of legal right; rendering legally disqualified;
        "certain disabling restrictions disqualified him for
        citizenship" [syn: {disqualifying}] [ant: {enabling}]