下か層そう階かい級きゅう

noun, noun which may take the genitive case particle 'no'

lower classes; proletariat

Refers to the social stratum at the bottom of a class hierarchy, often in sociological or political contexts. Can be used attributively with の.

• 彼かれは下か層そう階かい級きゅうの出しゅっ身しんだが、努ど力りょくして成せい功こうした。

  He comes from the lower classes, but worked hard and succeeded.