Purportless is a word that is not commonly used in everyday language. However, there are several synonyms that can be used instead of purportless, such as purposeless, pointless, aimless, meaningless, and senseless. All these words are used to describe something that lacks direction or purpose, and there can be different degrees of how strong each word conveys this sense of aimlessness. For instance, purposeless might describe something that lacks a clear objective, while meaningless might describe something that has no value or significance. These synonyms can be useful in communicating an idea that conveys a sense of directionless or meaning lacking property.