下か層そう階かい級きゅうMeaningsNounNo-adjective1. proletariat; lower classesKanji used下below層layer階floor (of a building)級classPitch accentかそうかいきゅうComposed of下か層そうlower layer; layer beneath; lower strata (classes)Noun階かい級きゅう(social) class; rank; gradeNoun