The word "not appreciates" can be replaced by a number of antonyms. Some of the most commonly used antonyms for "not appreciates" include dislikes, disdains, devalues, ignores, and belittles. Each of these antonyms has a unique meaning that helps to convey a different level of negativity towards something or someone. For instance, if someone dislikes something, they may simply not have a preference for it, while if they disdain something, they feel a strong aversion towards it. Similarly, if someone devalues something, they see it as inferior or unimportant, while if they ignore something, they simply pay no attention to it. All of these antonyms can be used to convey different shades of meaning when describing how someone feels about something.