lower class
US /ˌloʊ.ɚ ˈklæs/
UK /ˌloʊ.ɚ ˈklæs/

1.
the social group that has the lowest status in a society, typically composed of people who are poor or who do not have jobs or skills
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Many people from the lower class struggle with access to education and healthcare.
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The novel depicts the harsh realities of life for the lower class in the 19th century.
1.
relating to or characteristic of the lowest social class
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He grew up in a lower-class neighborhood.
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The film offers a glimpse into lower-class life.