Various articles on millennial generation are narrow-minded (6)

I believe the answer is:

stuffy

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'are narrow-minded' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

(Other definitions for stuffy that I've seen before include "Priggish" , "Lacking ventilation; narrow-minded" , "Airless - pompous" , "Old-fashioned" , "Airless; unadventurous" .)

I've seen this clue in the Sydney Morning Herald.

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