The opposite of "most unpurposed" can be "purposeful" or "intentional". These words indicate that something has a clear goal or aim. An action taken with purpose has a reason behind it, while something that is done without purpose lacks direction or focus. Other antonyms for "most unpurposed" may include words such as "deliberate", "calculated", "planned", "measured", "decisive", or "well-defined". Each of these words implies that an action or object has a specific intention or goal in mind, and is not just happening without reason or intention. It is important to consider both the purpose and the antonym while communicating, so that your message is clear and concise.