Like a sprite (5)
I believe the answer is:
elfin
'like a sprite' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elfin that I've seen before include "Small, delicately-framed" , "Small, delicate, mischievous and attractive" , "Small, delicate and charming" , "Describing Santa's helpers" , "Petite and charming" .)