De jure refers to things that are done legally, in accordance with the law. The opposite of de jure is de facto, which means things that are done in practice, even if they are not strictly legal. Other antonyms for de jure include unlawful, illegal, illegitimate, and unconstitutional. These words describe actions or things that violate the law or official rules and regulations. In contrast, de jure actions are sanctioned by the law and are often considered just or fair. Understanding these antonyms helps us to distinguish between actions that are legal and those that are not, giving us a better understanding of our rights and responsibilities in society.