temerityyoudaoicibaDictYouDict[temerity 词源字典]
temerity: [15] Someone who behaves with temerity is etymologically acting in the ‘dark’. The word was adapted from Latin temeritās ‘rashness’, a derivative of temere ‘blindly’, hence ‘rashly’. This in turn was formed from an unrecorded *temus ‘darkness’, a relative of tenebrae ‘darkness’, and hence originally denoted ‘acting in the dark, so that one cannot see’.
[temerity etymology, temerity origin, 英语词源]
temerity (n.)youdaoicibaDictYouDict
late 14c., from Latin temeritatem (nominative temeritas) "blind chance, accident; rashness, indiscretion, foolhardiness," from temere "by chance, at random; indiscreetly, rashly," related to tenebrae "darkness," from PIE root *teme- "dark" (cognates: Sanskrit tamas- "darkness," tamsrah "dark;" Avestan temah "darkness;" Lithuanian tamsa "darkness," tamsus "dark;" Old Church Slavonic tima "darkness;" Old High German dinstar "dark;" Old Irish temel "darkness"). The connecting notion is "blindly, without foreseeing."