The phrase "worth a million" is often used to describe something that is valuable beyond measure. However, there are several other synonyms that can be used to convey the same sentiment. For instance, one might describe something as "priceless," "invaluable," or "precious." Another option might be to use the phrase "beyond compare," indicating that the value of the thing in question is so great that there is no equivalent to it. Other possible synonyms include "irreplaceable," "indispensable," and "irresistible." Whatever term one chooses to use, the meaning remains the same: the item it describes is of incredible value and importance.