Cash in chips is a phrase that is often used in the context of gambling, to mean exchanging one's chips (representing money) for actual money gains. The antonyms of cashing in chips can vary, depending on the context in which the phrase is being used. If it is being used more generally, it could have antonyms like betting, gambling, risking, or losing. However, in the context of actually playing games like poker or blackjack, the antonyms could be standing, holding, folding, or quitting. Essentially, these words all represent the opposite action of cashing in chips, which involves exchanging them for money at the end of a game.