Parched without cold bitter (5)
I believe the answer is:
acrid
'bitter' is the definition.
(I've seen this before)
'parched without cold' is the wordplay.
'parched' becomes 'arid' (I've seen this before).
'without' indicates putting letters inside ('without' can be similar in meaning to 'outside').
'cold' becomes 'c' (eg on taps).
'arid' enclosing 'c' is 'ACRID'.
(Other definitions for acrid that I've seen before include "Nastily pungent" , "Having a bitter taste or small, like smoke" , "Unpleasantly pungent" , "Greek goddess" , "Pungent; caustic" .)