The antonyms for the word "de-valuated" are "appreciated," "inflated," "revalued," and "enhanced." "Appreciated" means to increase in value, while "inflated" means to increase in price or value beyond what is considered normal or reasonable. "Revalued" refers to the process of reviewing and adjusting the value of something, often resulting in an increase in value. Finally, "enhanced" refers to the act of improving or adding value to something. These antonyms are useful for describing the opposite of the negative effects of devaluation, such as the positive impact of increasing value or enhancing something's worth.