opsimathy (n.)youdaoicibaDictYouDict[opsimathy 词源字典]
1650s, from Greek opsimathia "learning late in life," from opse "late" (related to opiso "backward," opisthen "behind") + manthanein "to learn" (see mathematic). Related: Opsimath (n.).[opsimathy etymology, opsimathy origin, 英语词源]