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Qualified for a pass to freedom? (7)

Ross

I believe the answer is:

elderly

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'qualified' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

I don't understand the rest of the clue.

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(Other definitions for elderly that I've seen before include "over the hill" , "Getting on in years" , "... or not of tender years" , "Getting on a bit" , "Rather old" .)

I've seen this clue in the Evening Standard.
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