Synonyms for Counterattack (same or very similar meaning)
WordNet sense 1 (make a counterattack):
counterstrikeWordNet sense 2 (an attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc.):
countermoveWordNet sense 3 ((chess) an attack that is intended to counter the opponent's advantage in another part of the board):
counterplayFrom the ODE community, based on WordNetadd/edit