Hate adjusting temperature (4)
I believe the answer is:
heat
'temperature' is the definition.
(heat is a kind of temperature)
'hate adjusting' is the wordplay.
'adjusting' indicates an anagram.
'hate' anagrammed gives 'HEAT'.
(Other definitions for heat that I've seen before include "Vehemence" , "Hotness" , "Energy that causes a rise in temperature" , "High temperature" , "Cook" .)