Pompous
late Middle English: from Old French pompeux ‘full of grandeur’, from late Latin pomposus, from pompa ‘pomp’.
wiktionary
From Middle English pompous, from Old French pompeux, from Late Latin pomposus, from Latin pompa(“pomp”), from Ancient Greek πομπή(pompḗ, “a sending, a solemn procession, pomp”), from πέμπω(pémpō, “I send”). Doublet of pomposo.
etymonline
pompous (adj.)
late 14c., "characterized by exaggerated self-importance or an ostentatiously dignified style," from Old French pompos (14c., Modern French pompeux) and directly from Late Latin pomposus "stately, pompous," from Latin pompa "pomp" (see pomp). More literal (but less common) meaning "characterized by magnificence and dignity" is attested from early 15c. In 15c. it also could mean "fierce, formidable." Related: Pompously; pompousness.
