What are the opposite words for un constitutional?

Constitutional refers to anything that is in accordance with the principles set forth in a constitution. Therefore, antonyms for unconstitutional would be words that signify agreement or compliance. Some antonyms for unconstitutional include lawful, proper, valid, authorized, legitimate, just, right, and constitutional. These antonyms convey the sense of adherence to the legal principles enshrined in a constitution or a set of rules. When we describe something as constitutional, we mean that it conforms to the norms of the legal order. Conversely, when something is deemed unconstitutional, it is fundamentally flawed and goes against the very principles of the law. Therefore, using antonyms for unconstitutional highlights the importance of legality and compliance with established norms.