The antonyms for the phrase "put in to action" can vary depending on the context in which it is used or the intention behind it. Some possible antonyms include "halt," "stop," "cease," "abandon," "neglect," "postpone," "delay," "stagnate," "idle," "dawdle," "procrastinate," "ignore," and "hesitate." These words indicate the opposite of putting something into action, whether due to lack of interest, motivation, or urgency. In contrast, "put in to action" implies taking action or initiating a plan, idea, or solution to a problem. The antonyms can suggest a lack of progress, initiative, or commitment to achieve a desired outcome.