pomposity (n.)youdaoicibaDictYouDict[pomposity 词源字典]
early 15c., "pomp, solemnity," from Medieval Latin pompositas, from Late Latin pomposus "stately, pompous" (see pompous). The sense of "ostentatious display" is from 1610s; earlier in French pomposité.[pomposity etymology, pomposity origin, 英语词源]