Dictionary:

disqualification

  (dĭs-kwŏl'ə-fĭ-kā'shən)

1. The act of disqualifying or the condition of having been disqualified.
2. Something that disqualifies: illness as a disqualification for enlistment in the army.

Definition: disability; rejection for participation
Antonyms: ability, allowance, aptitude, capability

The inability to perform some act due to the existence of factors rendering the performance improper or inappropriate. See 117 F. 448, 451. For instance, a judge may be disqualified from hearing a particular case because of having previously represented one of the parties involved.

The noun has 2 meanings:

Meaning #1: unfitness that bars you from participation

Meaning #2: the act of preventing someone from participating by finding them unqualified