Devalue means to reduce the worth or value of something. Opposites or antonyms for this word include enhance, appreciate, value, and appreciate. Enhance means to increase the value, attractiveness or quality of something. Appreciate refers to the increase in value or worth of something over time. Value, on the other hand, is the worth or price of something. Appreciate means to recognize the worth, quality or importance of something. All of these antonyms are important in different contexts, and knowing them can help individuals express themselves more effectively in both verbal and written communications.