historyyoudaoicibaDictYouDict[history 词源字典]
history: [15] Etymologically, history denotes simply ‘knowledge’; its much more specific modern meaning is decidedly a secondary development. Its story begins with Greek hístōr ‘learned man’, a descendant of Indo-European *wid- ‘know, see’, which also produced English wit and Latin vidēre ‘see’. From hístōr was derived historíā ‘knowledge obtained by enquiry’, hence ‘written account of one’s enquiries, narrative, history’.

English acquired it via Latin historia, and at first used it for ‘fictional narrative’ as well as ‘account of actual events in the past’ (a sense now restricted to story, essentially the same word but acquired via Anglo-Norman).

=> story, vision, wit[history etymology, history origin, 英语词源]
manyoudaoicibaDictYouDict
man: [OE] Man is a widespread Germanic word (with relatives in German mann ‘man’ and mensch ‘person’, Dutch and Swedish man ‘man’, Danish mand ‘man’, and Swedish menniska ‘person’), and connections have even been found outside Germanic (Sanskrit, for instance, had mánu- ‘man’). But no decisive evidence has been found for an ultimate Indo- European source.

Among the suggestions put forward have been links with a base *men- ‘think’ or ‘breathe’, or with Latin manus ‘hand’. The etymologically primary sense of the word is ‘human being, person’, and that is what it generally meant in Old English: the sexes were generally distinguished by wer ‘man’ (which survives probably in werewolf and is related to world) and wīf (source of modern English wife) or cwene ‘woman’.

But during the Middle English and early modern English periods ‘male person’ gradually came to the fore, and today ‘person’ is decidedly on the decline (helped on its way by those who feel that the usage discriminates against women). Woman originated in Old English as a compound of wīf ‘woman, female’ and man ‘person’. Manikin [17] was borrowed from Dutch manneken, a diminutive form of man ‘man’; and mannequin [18] is the same word acquired via French.

=> manikin, mannequin
decided (adj.)youdaoicibaDictYouDict
"resolute," 1790, past participle adjective from decide. A decided victory is one whose reality is not in doubt; a decisive one goes far toward settling some issue. Related: Decidedly.
niece (n.)youdaoicibaDictYouDict
c. 1300, from Old French niece "niece, granddaughter" (12c., Modern French nièce), earlier niepce, from Latin neptia (also source of Portuguese neta, Spanish nieta), a more decidedly feminine form of neptis "granddaughter," in Late Latin "niece," fem. of nepos "grandson, nephew" (see nephew). Replaced Old English nift, from Proto-Germanic *neftiz, from the same PIE root (Old English also used broðordohter and nefene).

Until c. 1600, it also commonly meant "a granddaughter" or any remote female descendant. Cognate with Spanish nieta, Old Lithuanian nepte, Sanskrit naptih "granddaughter;" Czech net, Old Irish necht, Welsh nith, German Nichte "niece."