c.1386, "characterized by exaggerated self-importance," from O.Fr.
pompeux, from L.L.
pomposus "stately, pompous," from L.
pompa "pomp" (see
pomp). More literal, but less common, meaning "characterized by pomp" is attested from 1430.
Pomposity is first recorded 1432, from L.L.
pompositas, from
pomposus "stately, pompous." The sense of "ostentatious display" is from 1620, earlier in Fr.
pomposité.