One I try to reform from ill-fame (9)
I believe the answer is:
notoriety
'fame' is the definition.
(I know that fame can be written as notoriety)
'one i try to reform' is the wordplay.
'reform' indicates an anagram (letters in a new form).
'one'+'i'+'try'+'to'='oneitryto'
'oneitryto' is an anagram of 'NOTORIETY'.
'from ill' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for notoriety that I've seen before include "Dishonour" , "Bad publicity" , "Ill fame" , "State of being infamous" , "Infamy, disrepute" .)