pest (n.)youdaoicibaDictYouDict[pest 词源字典]
1550s (in imprecations, "a pest upon ____," etc.), "plague, pestilence," from Middle French peste (1530s), from Latin pestis "deadly contagious disease; a curse, bane," of uncertain origin. Meaning "noxious or troublesome person or thing" first recorded c. 1600.[pest etymology, pest origin, 英语词源]