Uncontrollably hot and stuffy (8)

I believe the answer is:

stifling

(Other definitions for stifling that I've seen before include "Unpleasantly hot or airless" , "Oppressively hot and airless" , "Flings it in suffocating manner" , "Smothering or suppressing" , "close?" .)

I've seen this clue in The Mirror.

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