classic

/ˈklæ.sɪk/

Of or relating to the first class or rank, especially in literature or art.
Exemplary of a particular style; defining a class/category.
Exhibiting timeless quality.
Of or pertaining to the ancient Greeks and Romans, especially to Greek or Roman authors of the highest rank, or of the period when their best literature was produced; of or pertaining to places inhabited by the ancient Greeks and Romans, or rendered famous by their deeds.
(euphemistic) Traditional; original.

Borrowed from French classique derived from Latin classicus (especially the highest, relating to the classes of Roman citizenry, of the class).

Latin

classicus

especially the highest, relating to the classes of Roman citizenry, of the class