Spoiled and crazy to insert ‘right’ again (6)
I believe the answer is:
marred
'spoiled' is the definition.
('mar' can be a synonym of 'spoil')
'crazy to insert right again' is the wordplay.
I cannot quite understand how this works, but
'right' could be 'ar' (I've seen this in other clues) and 'ar' is present in the answer.
'again' could be 're' (prefix meaning 'again') and 're' is present in the answer.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for marred that I've seen before include "Damaged or spoiled" , "'Impaired, spoilt (6)'" , "Blemished" .)