What are the opposite words for typical?

Typical, meaning "normal or expected," can have many antonyms depending on the context. Unusual, uncommon, unconventional, abnormal, exceptional or irregular are all antonyms that come to mind. Atypical, deviant and extraordinary can also be used. In some cases, it might depend on one's interpretation of "typical." Atypical might apply when referring to something that isn't typical in relation to what is usually considered standard or accepted. For instance, an atypical response to a situation might mean that the reaction is not typical, average or ordinary. Overall, there are many ways to describe the opposite of a typical characteristic, but it depends on the context in which the word is used.