Half the team get angry about being beaten (5)
I believe the answer is:
mated
'being beaten' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'half the team get angry' is the wordplay.
'half the' indicates taking half.
'get' indicates putting letters inside.
'angry' becomes 'mad' (similar in meaning).
'team' cut in half is 'te'.
'te' placed into 'mad' is 'MATED'.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for mated that I've seen before include "had sex" , "Joined, connected" , "given match" , "Defeated in game" .)