The word "instance" refers to a particular occurrence or case. Its antonym would be "absence," which means the state of being away or not present. Another antonym for instance could be "non-occurance," which means the absence of an event or situation. Conversely, a synonym antonym for instance is "everywhere," which refers to being present or visible in all places. Another antonym could be "generalization," which means the act of making broad statements or generalizations without specific reference to particular instances. Understanding antonyms for a word like "instance" helps to better understand its meaning and use in various contexts.