The Collaborative International Dictionary
lower-middle-class \lower-middle-class\ adj. occupying the lower part of the middle socioeconomic range in a society.
WordNet
adj. occupying the lower part of the middle socioeconomic range in a society
Usage examples of "lower-middle-class".
It was the Chrysler Building floating sideways in the ocean and cruising up and down the Atlantic coast of South America full of lower-middle-class people from Argentina and their wives and kids.
Considering the lower-middle-class neighborhood, the yellow Lamborghini outside had to belong to Carl.
The succession of lower-middle-class novels which are his greatest achievement stopped short at the other war and never really began again, and since 1920 he has squandered his talents in slaying paper dragons.
Wells's stories is, first of all, scientific discovery, and beyond that the petty snobberies and tragicomedies of contemporary English life, especially lower-middle-class life.