Not classical; not belonging to or characteristic of a traditional or long-established form or style; specifically not belonging to or characteristic of Greek or Roman antiquity.
Origin
Mid 17th century. From un- + classical.
Definition of unclassical in US English:
unclassical
adjective
Not classical; not belonging to or characteristic of a traditional or long-established form or style; specifically not belonging to or characteristic of Greek or Roman antiquity.