The phrase "not feeling anything" can have various synonyms depending on the context in which it is used. Some possible synonyms include emotions that are numb or non-existent, like apathy, indifference, or detachment. Other synonyms may include feeling empty, neutral, or blank. In some cases, people may describe feeling disconnected, disengaged, or dissociated. Regardless of the particular synonym, all of these describe a state of not feeling or experiencing any emotional responses to a situation or environment. It is important to note that "not feeling anything" can also signify underlying mental health concerns, and individuals may benefit from seeking professional support if this becomes an ongoing experience.