candor (n.)youdaoicibaDictYouDict[candor 词源字典]
"openness of mind, impartiality, frankness," c. 1600, from Latin candor "purity, openness," originally "whiteness," from candere "to shine, to be white" (see candle). Borrowed earlier in English (c. 1500) with the Latin literal sense "extreme whiteness."[candor etymology, candor origin, 英语词源]