The word undergoings refers to the experiences, events, or situations that someone goes through or endures. The antonyms for this word are non-experiences, non-events, non-situations, and non-incidents. These words describe the absence of any happening, action, or circumstance. The opposite of undergoings is the state of nothingness, emptiness, or voidness. Synonyms for these antonyms might include terms such as stagnancy, inactivity, and stillness. While undergoings can be positive or negative, the antonyms suggest a lack of experience or an absence of any kind of events or changes. In essence, the antonyms for undergoings represent a state of calmness or a lack of activity.