Sensitivity I initially considered for manoeuvre (6)
I believe the answer is:
tactic
'for manoeuvre' is the definition.
(synonyms)
'sensitivity i initially considered' is the wordplay.
'sensitivity' becomes 'tact' (being tactful is being sensitive).
'initially' indicates taking the first letters.
The initial letter of 'considered' is 'c'.
'tact'+'i'+'c'='TACTIC'
(Other definitions for tactic that I've seen before include "Scheme or ploy used in battle, sport, etc, often within an overall strategy" , "Device" , "Manoeuvre designed to outwit enemy" , "Military manoeuvre" , "Stratagem, procedure" .)