The term "flat broke" typically means that someone has no money whatsoever. Antonyms for this phrase would include words such as "affluent," "wealthy," "rich," "loaded," "prosperous," "comfortable," and "well-off." These are all terms that convey a very different financial situation from being "flat broke." While a person who is "flat broke" might be struggling to pay their bills and might not have enough money to even buy food, someone who is wealthy or affluent might have lavish and extravagant lifestyles, luxury cars, mansions, and other signs of wealth. Antonyms for "flat broke" can help us understand just how different people's financial circumstances can be.