grisaille
ɡriˈzɑːl
Definitions
1. noun
a painting technique using shades of gray, especially in a monochromatic color scheme, or a painting in this style
“The artist experimented with grisaille to create a sense of depth and dimension in her work.”
2. noun
a preparation or underpainting in monochrome, typically in gray, used as a base for further painting
“The artist used grisaille to block out the composition before adding color.”