"Be on a par" means to be equal or equivalent in value, status, or importance. Antonyms or opposite words of "be on a par" are, therefore, words indicating unequal or dissimilar things. Some antonyms for this expression could be:
- Inferior: indicating that something or someone is of lower quality or importance.
- Unequal: referring to things that are not of the same value or size.
- Dissimilar: speaking of things that are not similar in nature, appearance, or function.
- Disparate: indicating things that are fundamentally different from each other.
- Uneven: suggesting that things are not level or balanced.
- Incommensurate: pointing out that things cannot be compared or measured in the same terms.