The antonyms for the expression "wert par with" are numerous, as the phrase suggests that two things are equal or comparable. Antonyms for "wert par with" include "inferior to," "less than," "unequal to," "unmatchable," "uneven," and "inadequate." When something is "not on par with" something else, it means that it is not able to measure up to the standards of the other object or concept. For instance, a company's low-quality product might not be on par with the high standards of their brand. Similarly, a competitor might be inferior to the current champion in a game or competition, indicating that they are not on par with the winner.