When you're faced with a question that seems impossible to answer, it's commonly referred to as the "million dollar question." But did you know that there are several other phrases and synonyms out there that can describe this kind of predicament? Some popular alternatives include "the ultimate question," "the golden question," or "the impossible question." Other options include "the pivotal question," "the make-or-break question," or "the critical question." Regardless of which phrase you use, the sentiment remains the same: it's a question that carries a great deal of weight or importance and may not have an easy answer.