Stuffy serials need rewriting (7)

I believe the answer is:

airless

'stuffy' is the definition.
(synonyms)

'serials need rewriting' is the wordplay.
'need rewriting' indicates an anagram.
'serials' anagrammed gives 'AIRLESS'.

(Other definitions for airless that I've seen before include "Not ventilated" , "Stifling" , "Lacking ventilation" , "Very stuffy" , "Still" .)

I've seen this clue in The Guardian.

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