LeonardyoudaoicibaDictYouDict[Leonard 词源字典]
masc. proper name, from French Léonard, Old French Leonard, from German Leonhard, from Old High German *Lewenhart, literally "strong as a lion," from lewo (from Latin Leo, see lion) + hart "hard" (see hard (adj.)).[Leonard etymology, Leonard origin, 英语词源]
pleonasm (n.)youdaoicibaDictYouDict
"redundancy in words," 1580s, from Late Latin pleonasmus, from Greek pleonasmos, from pleonazein "to be more than enough, to be superfluous," in grammatical use, "to add superfluously," from comb. form of pleon "more" (see pleio-).
pleonastic (adj.)youdaoicibaDictYouDict
1778, with -ic + Greek pleonastos "abundant," from pleonazein (see pleonasm). Related: Pleonastical (1650s).