Miss fire is a term used when a firearm fails to discharge properly. It can also refer to any situation where something doesn't function as intended. The antonyms of miss fire could be "success," "hit," "work," "function," or "operate." If a weapon successfully fires, it's a hit, and it functions or operates correctly. Non-violent examples of antonyms for miss fire include words like "succeed," "function," "satisfy," or "achieve." So, if you're looking to describe something that has gone well, using one of these antonyms in place of miss fire will make your point clear.