Celebrity challenged to ignore one without food (7)
I believe the answer is:
starved
'ignore one without food' is the definition.
I can't tell whether this defines the answer.
'celebrity challenged' is the wordplay.
'celebrity' becomes 'star' (a star is a celebrity or famous person).
'challenged' becomes 'ved' (I can't explain this - if you can you should give a lot more credence to this answer).
'star'+'ved'='STARVED'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for starved that I've seen before include "really hungry" , "Denied" , "Went without food" .)