1 : to deprive of the required qualities, properties, or conditions [a financial interest in the case that disqualified the judge]
2 : to deprive of a right or privilege esp. after a hearing [misconduct that disqualified the employee from receiving unemployment benefits]
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.