When something is highlighted, it stands out for its importance or significance. However, there are several antonyms of the word highlighted, such as obscured, concealed, hidden, or eclipsed. If something is obscured, it is less visible or less apparent. Similarly, when something is concealed, it becomes hidden or kept secret. Hidden or eclipsed means something is completely covered, blocked or overshadowed by something else, making it difficult to become visible. In summary, antonyms of being highlighted means something is weaker, hidden or covered, and not attracting attention or importance.