Cut when drunk (4)
I believe the answer is:
hewn
'cut' is the definition.
(synonyms)
'when drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'when' is an anagram of 'HEWN'.
(Other definitions for hewn that I've seen before include "Axed" , "Cut with blows" , "Cut with an axe or chisel" , "Hacked" , "Shaped as with an axe" .)