Insensitive? I'm not sure editor counted (8)
I believe the answer is:
numbered
'counted' is the definition.
('number' can be a synonym of 'count')
'insensitive? i'm not sure editor' is the wordplay.
'insensitive?' becomes 'numb' (synonyms).
'i'm not sure' becomes 'er' (expression of hesitation).
'editor' becomes 'ed' (abbreviation).
'numb'+'er'+'ed'='NUMBERED'
(Other definitions for numbered that I've seen before include "came to" , "Designated" , "Assigned a numeral" , "Enumerated" , "was calculating" .)