Finally Luke and Darth resolved this? (6)
I believe the answer is:
hatred
'this?' is the definition.
The definition suggests a singular noun which matches the answer.
'finally luke and darth resolved' is the wordplay.
'finally' says to take the final letters.
'and' is a charade indicator (letters next to each other).
'resolved' indicates an anagram.
The last letter of 'luke' is 'e'.
'e' after 'darth' is 'darthe'.
'darthe' with letters rearranged gives 'HATRED'.
Can you help me to learn more?
(Other definitions for hatred that I've seen before include "Dearth (anag)" , "'Loathing, enmity (6)'" , "Deep dislike and aversion" , "Detestation, loathing" , "hostility" .)