the middle class
noun [ S ]
ukus(also the middle classes) ECONOMICS
the social group that consists of well-educated people, such as doctors, lawyers, and teachers, who are neither very rich nor very poor:
lower/upper middle class The upper middle class tends to go into business or the professions.
middle-class
adjective uk/ˌmɪdl̩ˈklɑːs/ us/ˈmɪdlˈklæs/
Tax subsidies will be granted to help uninsured middle-class families.
Compare
lower-class
upper class
working-class