The term "struck it rich" usually refers to someone who has suddenly become wealthy or successful. However, its antonyms can be used to describe someone who is struggling or lacking success. Some antonyms for "struck it rich" are broke, destitute, bankrupt, impoverished, and non-successful. While "struck it rich" depicts abundance and prosperity, its antonyms represent scarceness and misfortune. It's important to note that these antonyms are not necessarily permanent states, and with hard work and perseverance, one can bounce back from shortcomings and eventually strike it rich.