I deserve to get angry (5)
I believe the answer is:
irate
'angry' is the definition.
('irate' can be similar in meaning to 'angry')
'i deserve' is the wordplay.
'deserve' becomes 'rate' ('rate' can be a synonym of 'deserve').
'i'+'rate'='IRATE'
'to get' is the link.
(Other definitions for irate that I've seen before include "Hacked off" , "Extremely angry" , "I tear away, being annoyed" , "Cross, irritated" , "Boiling" .)