unquilted
/ˌʌŋˈkwɪltɪd/Definitions
1. adjective
not quilted or made into a quilt
“The bedspread was unquilted, showing its plain fabric underneath.”
2. adjective
not decorated or embellished with intricate patterns or designs
“The artist preferred to paint unquilted canvases, allowing the viewer to focus on the colors and textures.”