asymmetricaladjective
/ˌeɪ·sɪˈme·trɪ·kəl/also asymmetricgeometry having parts on either side or half that do not match or are not the same size or shape:
The building's asymmetrical silhouette features a single tower on one corner.
chemistry, geometry An asymmetrical carbon atom is one that is attached to four different atoms or groups of atoms.