Of or relating to the lower socioeconomic classes.(adjective)
Vulgar or crude; common: was put off by their low-class behavior. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "low-class" in a sentence
"According to journalist Herbert Asbury, the author of Gangs of New York, the district was occupied “for the most part, by freed Negro slaves and low-class Irish” who “crowded indiscriminately into the old rookeries of the Points.”"
"The negative meaning is of poor, low-class, uneducated, disorganized and dirty people."
"Well, leave it to a Republican to scrape the bottom of the low-class barrel."