Bad indeed, but nearly ignored (6,1,5,3)
I believe the answer is:
turned a blind eye
'ignored' is the definition.
(I've seen this before)
'bad indeed but nearly' is the wordplay.
'bad' indicates anagramming the letters.
'indeed'+'but'+'nearly'='indeedbutnearly'
'indeedbutnearly' is an anagram of 'TURNED A BLIND EYE'.
(Other definitions for turned a blind eye that I've seen before include "Pretended not to see" , "what Nelson did when shaking head?" , "Ignored" .)