Imperiums, also known as empires, are vast states or territories under a single governing authority. The antonyms for this word could include small, fragmented, or divergent entities. Instead of uniformity and control, the antonyms for imperiums would imply diversity and individuality. Other antonyms could be equality, democracy, or anarchism, all of which emphasize the decentralization of power and the dismantling of centralized authority. In short, the antonyms for imperiums suggest a rejection of the unequal distribution of power and resources that often characterize empires, in favor of a more equitable order that values plurality and autonomy.