疎で終わる言葉

かそ【過疎】

過疎の村「an underpopulated [a thinly populated] village過疎化(a) decrease in population, depopulation過疎地...

くうそ【空疎】

空疎な empty; insubstantial空疎な議論を繰り返すrepeat empty arguments

しんそ【親疎】

彼は親疎の別なくだれにでも会うHe welcomes people whether he knows them well or not.