Fight duel, drunk: hospital finally charming (10)
I believe the answer is:
delightful
'charming' is the definition.
(I've seen this in another clue)
'fight duel drunk hospital finally' is the wordplay.
'drunk' indicates an anagram.
'finally' indicates one should take the final letters.
The last letter of 'hospital' is 'l'.
'fight'+'duel'='fightduel'
'fightduel' with letters rearranged gives 'delightfu'.
'delightfu'+'l'='DELIGHTFUL'
(Other definitions for delightful that I've seen before include "Greatly pleasing" , "Pretty" , "Charming" .)