Every other part of icky sweet (5)
I believe the answer is:
candy
'sweet' is the definition.
(candy is a kind of sweet)
'every other part of icky' is the wordplay.
I cannot really see how this works, but
'part' could be 'can' (can is a kind of part) and 'can' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for candy that I've seen before include "Sugary sweet" , "Crystallised sugar; US sweets" , "American confectionary" , "Sweet (US)" , "American sweets" .)