jocund (adj.)youdaoicibaDictYouDict[jocund 词源字典]
late 14c., "pleasing, gracious; joyful," from Old French jocond or directly from Late Latin iocundus (source of Spanish jocunde, Italian giocondo), variant (influenced by iocus "joke") of Latin iucundus "pleasant," originally "helpful," contraction of *iuvicundus, from iuvare "to please, benefit, help" (see adjutant).[jocund etymology, jocund origin, 英语词源]