Synonyms of atypical

Adjective

1. atypical (vs. typical), untypical, unrepresentative, abnormal#1, unnatural, uncharacteristic

usage: not representative of a group, class, or type; "a group that is atypical of the target audience"; "a class of atypical mosses"; "atypical behavior is not the accepted type of response that we expect from children"

2. atypical, irregular, abnormal (vs. normal), unnatural

usage: deviating from normal expectations; somewhat odd, strange, or abnormal; "these days large families are atypical"; "atypical clinical findings"; "atypical pneumonia"; "highly irregular behavior"

Definition and meaning of atypical (Dictionary)