"Be taken the cleaners" is an idiomatic expression that refers to someone being cheated or swindled out of money or possessions. Its antonyms, on the other hand, would be words and phrases that describe a situation where one is able to keep their monies safe or even profit from it. These antonyms include "make a killing," which means to earn a significant amount of money, "win big," which refers to achieving a great or positive outcome, and "come out ahead," which means to profit from a situation. Other antonyms for being taken to the cleaners include words and phrases like gain, profit, success, and security.