Has made trouble when embarrassed (7)
I believe the answer is:
ashamed
'embarrassed' is the definition.
('ashamed' can be similar in meaning to 'embarrassed')
'has made trouble' is the wordplay.
'trouble' is an anagram indicator.
'has'+'made'='hasmade'
'hasmade' is an anagram of 'ASHAMED'.
'when' acts as a link.
(Other definitions for ashamed that I've seen before include "Abashed - embarrassed" , "hanging his head" , "Afflicted with remorse, feeling sense of wrongdoing" , "Having painful regret for behaviour" , "Remorseful" .)