Insistent desire (4)
I believe the answer is:
itch
(Other definitions for itch that I've seen before include "A nagging desire" , "Uncomfortable feeling" , "source of irritation" , "Irritate" , "Tickle; urge" .)
I believe the answer is:
itch
(Other definitions for itch that I've seen before include "A nagging desire" , "Uncomfortable feeling" , "source of irritation" , "Irritate" , "Tickle; urge" .)