The concept of de-valuation refers to the decrease in the value of something, whether it be a currency, asset, or concept. Antonyms for de-valuation would, therefore, refer to the increase in value of something. These antonyms include valuation, appreciation, enhancement, elevation, and amplification. Valuation refers to the assessment or determination of the worth of something, while appreciation is the increase in value or price of something over time. Enhancement refers to the improvement or augmentation of something to make it more valuable, while elevation and amplification both relate to the increase in magnitude or intensity of something. All of these antonyms represent the opposite of the negative impact of de-valuation.