brightyoudaoicibaDictYouDict[bright 词源字典]
bright: [OE] Bright is a word of ancient origins, going back to Indo-European *bhereg-, which has produced a range of words with the same general meaning in a range of Indo-European languages (for example Sanskrit bhrājate ‘shine’). The Germanic derivative was *berkhtaz, which produced a number of offspring amongst the early Germanic languages, including Old English beorht, Old High German beraht, and Old Norse bjartr, all now lost except English bright.
[bright etymology, bright origin, 英语词源]
bright (adj.)youdaoicibaDictYouDict
Old English bryht, by metathesis from beorht "bright; splendid; clear-sounding; beautiful; divine," from Proto-Germanic *berhta- "bright" (cognates: Old Saxon berht, Old Norse bjartr, Old High German beraht, Gothic bairhts "bright"), from PIE root *bhereg- "to gleam, white" (cognates: Sanskrit bhrajate "shines, glitters," Lithuanian breksta "to dawn," Welsh berth "bright, beautiful"). Meaning "quick-witted" is from 1741.