The word "dis-allows" refers to the act of prohibiting or denying permission to someone or something. Its antonyms include "allows," "permits" and "approves." When you allow or permit something, you give permission for it to happen or exist. When you approve of something, you give your agreement or support for it. All of these antonyms have the same basic meaning, but they differ in their level of authority and formality. In contrast to "dis-allows," which can be used in formal or legal contexts, these antonyms tend to be more casual and used in everyday conversations.