unˈsewered,ppl.a. (un-1 8.) 1844R. H. Horne New Spirit of Age I. 113 The unsewered, undrained, and uncleansed localities.1864R. A. Arnold Cotton Fam. 440 The unsewered towns of the south.1885Atlantic Monthly Apr. 467/1 Roadways, ungraded, unsewered, and unpaved.