Sweltering temperature not initially disagreeable (6)
I believe the answer is:
'sweltering' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for torrid that I've seen before include "Scorchingly hot" , "Hot and emotional" , "Bendy" , "Blistering - steamy" , "Of climate, very hot and dry" .)