Bizarre report of former lover, silly cretin (9)
I believe the answer is:
eccentric
'bizarre' is the definition.
(synonyms)
'report of former lover silly cretin' is the wordplay.
I cannot really see how this works, but
an anagram of 'cretin' is 'centri' which is within the answer.
This explanation may well be incorrect...
(Other definitions for eccentric that I've seen before include "Odd - nuts" , "cam" , "card" , "not moving in proper circles?" , "Off-the-wall" .)