egregiousyoudaoicibaDictYouDict[egregious 词源字典]
egregious: see segregate
[egregious etymology, egregious origin, 英语词源]
egregious (adj.)youdaoicibaDictYouDict
1530s, "distinguished, eminent, excellent," from Latin egregius "distinguished, excellent, extraordinary," from the phrase ex grege "rising above the flock," from ex "out of" (see ex-) + grege, ablative of grex "herd, flock" (see gregarious).

Disapproving sense, now predominant, arose late 16c., originally ironic. It is not in the Latin word, which etymologically means simply "exceptional." Related: Egregiously; egregiousness.