The phrase "striking it rich" refers to sudden and unexpected wealth or success. However, its antonyms would be words like "struggling," "failing," "poverty-stricken," "unsuccessful," and "unfortunate." These words suggest a lack of financial success, or that someone has not achieved the level of wealth they had hoped for. While "striking it rich" embodies the idea of a positive outcome, these antonyms reflect the possibility of an unfavorable situation. It's important to remember that wealth and success can take many forms, and people can live fulfilling lives regardless of their financial status.