Word Origin & History
nuance
1781, from Fr. nuance "slight difference, shade of color," from nuer "to shade," from nue "cloud," from Gallo-Romance *nuba, from L. nubes "cloud;" related to obnubere "to veil," from PIE *sneudh- "fog" (cf. Avestan snaoda "clouds," Welsh nudd "fog," Gk. nython, in Hesychius "dark, dusky").