Counter-action refers to a response or action taken to oppose or negate an activity, plan or idea. Its antonyms, therefore, would be words that connote affirming, accepting, or facilitating or taking no action at all. Some antonyms of counter-action include inaction, support, cooperation, agreement, and concordance. Inaction suggests the absence of any action or reaction while support implies an active effort to promote a plan or idea. Cooperation and agreement both signify working together, whereas concordance indicates a state of harmony or consensus. Understanding the antonyms of counter-action can help one to choose the right course of action in different scenarios that require a response to circumstances that may require diverse approaches to problem-solving or conflict resolution.