uncommon, or perhaps not suitable one diagnostic category.
1847, from a- (2) "not" + typical. Related: Atypically.
Deviating from the regular; not typical.
maybe not agent of a group, course, or kind
- deviating from regular objectives; significantly odd, strange, or abnormal
- which has no kind; without typical character; unusual; unlike the type.
(a.) Who has no kind; without typical character; irregular; unlike the sort.