Capable of being disqualified; able to be declared ineligible or unfit for something.
From disqualify + -able (capable of being). Disqualify uses dis- (reversal) + qualify (from Latin qualificare, to describe the quality of).
The -able suffix is incredibly productive in English—almost any transitive verb can take it to mean 'capable of being [verb]ed,' letting us quickly create new words like 'binge-watchable' or 'shareable' for modern concepts.
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