Sui juris is a Latin word that means "of one's own right" and refers to an individual's ability to act independently and make their own decisions. The antonyms for sui juris would be words that convey the opposite meaning, such as "underage", "incompetent", "dependent", "subordinate", "restricted", "constrained", "coerced", or "enslaved". These words highlight situations where an individual does not have the liberty or legal capacity to act on their own behalf, and where their decisions are dictated by external factors such as age, mental or physical disabilities, lack of authority, or legal constraints. When we speak of sui juris, we celebrate the power and autonomy of individuals, and recognize the importance of self-determination in our society.