Foes; adversaries (7)
I believe the answer is:
enemies
I believe this clue is a double definition.
'foes' is the first definition.
(enemy is a kind of foe)
'adversaries' is the second definition.
(I know this)
(Other definitions for enemies that I've seen before include "Those we fight" , "Foes, opponents" , "Foes, hostile groups" , "Foes, adversaries" .)