1314, from O.Fr. official
(12c.), from L. officialis
"attendant to a magistrate, public official," noun use of officialis
(adj.) "of or belonging to duty, service, or office," from officium
). Meaning "person in charge of some public work or duty" first recorded 1555. The adj. is first attested 1533, from O.Fr. oficial,
from L. officialis. Officialese
"language of officialdom" first recorded 1884.