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

[ Syn: untypical ]

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

[ Syn: irregular ]