Hot, with sources of some peppers removed, implies cold (3)
I believe the answer is:
icy
'cold' is the definition.
(similar in meaning)
I can't explain the rest of the clue.
(Other definitions for icy that I've seen before include "unsympathetic" , "Very chilly" , "Very cold, hostile" , "(Of relations) very hostile" , "Distant - freezing" .)