When it comes to synonyms for "playing market," there are a number of options to choose from. One common phrase that is similar in meaning is "investing in stocks." This phrase specifically references the act of buying and selling shares of publicly-traded companies in order to hopefully earn a profit. Other phrases that can be used as synonyms include "speculating in the stock market," "trading stocks," and "playing the stock market." Regardless of the specific terminology used, the underlying concept is the same: individuals are making calculated moves in the hopes of profiting from the fluctuations of the stock market.