The antonyms for the word "disallowed" include permitted, allowed, authorized, accepted, sanctioned, legalized, approved, licensed, endorsed, and validated. These words convey the opposite meaning of disallowed, which means not allowed or prohibited. When something is disallowed, it is forbidden, rejected, and declared improper. To find its opposite, we need to look for words that mean acceptable or lawful. These antonyms are crucial in communicating effectively and conveying the intended message. Knowing the antonyms of a word allows us to choose the right words and express our thoughts accurately.