Overvaluing is the antonym for the word "under valuing". When we talk about under valuing, it means that something is not given the worth or value it deserves. On the other hand, overvaluing means giving something more value than its actual worth. Overvaluing something can lead to negative consequences like overpaying for a product or service. It is essential to evaluate the true value of something before attaching a price tag to it. Overvalued stocks, for example, can cause investors to lose money when reality strikes. Thus, it's best to find the balance between under valuing and overvaluing to make informed decisions.