Over growing, which means excessively growing or growing too much, has several antonyms that express the opposite meaning. The first antonym is under growing, which means growing less than expected or not enough. Another antonym for over growing is stunted, which refers to the arrested or slowed growth of something. Additionally, the word shrinking is an antonym for over growing, which indicates a reduction in size or amount of something. Conversely, the term receding denotes the gradual retreat or decrease of growth. To sum it up, there are several antonyms that can be used to convey the opposite meaning of over growing, including under growing, stunted, shrinking, and receding.