Hell with back to front relative darkness (5)
I believe the answer is:
light
'relative darkness' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'hell with back to front' is the wordplay.
'hell' becomes 'lig' (I can't explain this - if you can you should believe this answer much more).
'back' indicates one should take the final letters.
'front' suggests taking the first letters.
The final letter of 'with' is 'h'.
The initial letter of 'to' is 't'.
'lig'+'h'+'t'='LIGHT'
Can you help me to learn more?
(Other definitions for light that I've seen before include "Opposite of dark" , "Portable" , "Low in density" , "Pane of glass" , "Whitish" .)