The antonyms for the term "out action" are "active" or "functioning." When something is out of action, it means that it is not working properly or not working at all. On the contrary, when something is active, it means that it is in motion or functioning correctly. For instance, a car that is out of action cannot move, while an active car is on the go. Similarly, if the printer is out of action, it cannot print any documents, but if it is active, it can quickly produce prints. Hence, the antonyms for out of action are essential to understand the opposite meaning of something that is not operating properly.