When it comes to antonyms for the phrase "put up money for," we could consider the opposite action, such as withdrawing money instead of investing it. Other antonyms may include not investing money at all, or passing on the opportunity to contribute financially. Additionally, some antonyms may involve seeking financial support rather than providing it, requesting assistance from others instead of offering it oneself. Another possible antonym could be donating one's time or resources, rather than money, to support a cause or project. Ultimately, the antonyms for "put up money for" will depend on the specific context and circumstances of the situation at hand.