Star fired, suffering excessive exposure (9)
I believe the answer is:
sunburned
'suffering excessive exposure' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I don't see?
'star fired' is the wordplay.
'star' becomes 'sun' (the Sun is a star).
'fired' becomes 'burned' ('burn' can be a synonym of 'fire').
'sun'+'burned'='SUNBURNED'
Can you help me to learn more?
(Other definitions for sunburned that I've seen before include "having had too much radiation" , "with light damage" , "Suffering from overexposure to the source of light" , "Tanned" .)