Hanging fire means to delay in taking an important action or decision, or to be uncertain about something. The opposite of hanging fire is to act decisively, promptly, and with confidence. Some antonyms for hanging fire include taking action, making a move, acting decisively, being proactive, showing initiative, exhibiting urgency, and showing assertiveness. These antonyms are essential in situations where there is a need to act quickly and efficiently. Procrastination and delay can lead to missed opportunities, loss of profits, or even disaster. Therefore, it is vital to develop a mindset of taking prompt and decisive action whenever possible.