Non beings are things that don't exist or lack the characteristics of living beings. It's challenging to come up with antonyms for this term, as it is quite specific. Nonetheless, if we were to consider the opposite of everything that non beings represent, the antonyms could be "existent," "alive," or "animate." Therefore, if we were to describe the opposite of non beings, we would call them "beings." These are things that have life or exist in reality. Other antonyms may include "real," "substantial," and "tangible," which all have a sense of concreteness or physicality, unlike non beings that exist only in the abstract.