Cautious in conflict, coming to enemy finally (4)
I believe the answer is:
wary
'cautious' is the definition.
(similar in meaning)
'conflict coming to enemy finally' is the wordplay.
'conflict' becomes 'war' (war is a kind of conflict).
'coming to' is a charade indicator (letters next to each other).
'finally' suggests the final letters.
The final letter of 'enemy' is 'y'.
'war'+'y'='WARY'
'in' acts as a link.
(Other definitions for wary that I've seen before include "Circumspect" , "Watchful" , "Displaying caution" , "Cautious and vigilant.17 Add up for infant" , "Careful - cautious" .)