More certain about right outcome for resignation (9)
I believe the answer is:
surrender
'resignation' is the definition.
(synonyms)
'more certain about right outcome' is the wordplay.
'more certain' becomes 'surer' ('sure' can be a synonym of 'certain').
'about' indicates putting letters inside.
'right' becomes 'r' (common abbreviation).
'outcome' becomes 'end' (I've seen this in another clue).
'r'+'end'='rend'
'surer' going around 'rend' is 'SURRENDER'.
'for' is the link.
(Other definitions for surrender that I've seen before include "Capitulation" , "submission" , "Resign" , "Capitulate, relinquish" , "Wave the white flag" .)