Counter-strikes, meaning retaliatory or defensive measures taken against an attack or aggression, can have a number of antonyms depending on the context in which they are used. Some possible antonyms might include "appeasement" or "accommodation," which suggest a willingness to negotiate or compromise rather than fight back. Other alternatives could be "concession" or "surrender," indicating a complete yielding of authority or power. Still, other antonyms might include "avoidance" or "evade," which suggest a more passive approach to conflict resolution, or "harmony" or "peace," which suggest a commitment to peaceful coexistence and mutual understanding rather than confrontation or violence. Ultimately, the choice of antonym will depend on the specific situation and the desired outcome.