The phrase "hangs fire" refers to a situation where something has been delayed or postponed. The antonyms for "hangs fire" are words like "act immediately," "proceed promptly," "execute swiftly," "act expeditiously," and "move forward without delay." These words convey a sense of urgency and suggest that action needs to be taken quickly. In contrast, "hangs fire" implies a lack of activity or delayed response, which can be frustrating, particularly in situations where a quick decision or action is necessary. Using antonyms can help to convey a different tone, one of action and decisiveness, helping to move things forward rather than getting stuck in inaction.