Error of omission (9)
I believe the answer is:
oversight
(Other definitions for oversight that I've seen before include "error" , "Neglect" , "Failure to notice - blunder" , "Failure to notice something" , "act of negligence" .)
I believe the answer is:
oversight
(Other definitions for oversight that I've seen before include "error" , "Neglect" , "Failure to notice - blunder" , "Failure to notice something" , "act of negligence" .)