Is a sore loser (5)
I believe the answer is:
sulks
(Other definitions for sulks that I've seen before include "Fit of pique" , "Broods" , "Pet" , "Is sullen and ill-tempered" , "Shows petty resentment" .)
I believe the answer is:
sulks
(Other definitions for sulks that I've seen before include "Fit of pique" , "Broods" , "Pet" , "Is sullen and ill-tempered" , "Shows petty resentment" .)