At Does Atypical Mean?

1 : not typical : irregular, unusual an atypical form of a disease atypical weather for this area.

What does being atypical mean?

adjective. not typical; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species. Also a·typ·ic .

Does atypical mean unusual?

Atypical is a synonym of "unusual," but it carries a more objective feel—scientific studies might mention atypical results, suggesting that there is a clear definition of what is typical and what is not. "Unusual" is more of a casual observation that one might make in a non-scientific context.