louche (adj.)youdaoicibaDictYouDict[louche 词源字典]
"dubious, disreputable," 1819, from French louche "squinting," from Old French lousche, lois (12c.) "cross-eyed, squint-eyed, lop-sided," from Latin lusca, fem. of luscus "one-eyed," of unknown origin.[louche etymology, louche origin, 英语词源]