The phrase "without penalty" generally implies the absence of any negative consequence or punitive action. However, in order to convey this idea in a different way, one might use synonyms like "exempted," "not liable," "free of charge," "with no repercussions," "unpunished," "off the hook," "in the clear," or "absolved." These words can be used interchangeably with "without penalty" and still effectively communicate the idea that there will be no negative consequences or punitive actions as a result of a particular action or decision. It is always important to choose the synonym that best fits the context and overall tone of the message being conveyed.