late 14c., "higher in position," from O.Fr. superior, from L. superiorem (nom. superior) "higher," comparative of superus "situated above, upper," from super "above, over" (see super-). Meaning "higher in rank or dignity" is attested from late 15c.; sense of "of a higher nature or character" is attested from 1530s. Noun meaning "person of higher rank" is attested from late 15c.