Lively joy (4)
I believe the answer is:
glee
'lively joy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for glee that I've seen before include "Jewelled headband" , "Lively or triumphant joy" , "Mirth - part-song" , "Joy; part-song" , "Great joy" .)