Ignored decent leg breaks (9)
I believe the answer is:
neglected
'ignored' is the definition.
(I know that ignored can be written as neglected)
'decent leg breaks' is the wordplay.
'breaks' indicates anagramming the letters.
'decent'+'leg'='decentleg'
'decentleg' with letters rearranged gives 'NEGLECTED'.
(Other definitions for neglected that I've seen before include "Treated carelessly" , "Disregarded or failed to do something" , "Ignored, left undone" , "Failed to do or to attend to" , "Overgrown" .)