Sweltering temperature not initially disagreeable (6)

I believe the answer is:

torrid

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'sweltering' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

(Other definitions for torrid that I've seen before include "Scorchingly hot" , "Hot and emotional" , "Bendy" , "Blistering - steamy" , "Of climate, very hot and dry" .)

I've seen this clue in The Sun.

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