Antonyms for the phrase "make lower" would be "raise", "elevate", "heighten", "increase", or "boost". These words connote an upward movement or an increase in intensity, as opposed to "make lower," which indicates a decrease in value or position. When one wants to make something smaller, it follows that they would "make lower" the object or subject. However, in situations where one wants to increase or enhance something, "make lower" would be the exact opposite of what they would wish to accomplish. Therefore, it is essential to know the antonyms of "make lower" to achieve the desired outcome in various settings.