From Wiktionary, the free dictionary
Probably from a Mongolic source. Compare Turkish kılıbık, Mongolian гирби (girbi), etc.
килбик • (kilbik)
- timid, shy
- оргууй (orguuy, “quiet, shy”)
- симик (simik, “quiet, shy”)
- килбигий (kilbigiy, “to be embarrassed, to be shy”)