Scŭm'ble, v. t.

verbtransitive

v. t. [imp. & p. p. SCUMBLED; p. pr. & vb. n. SCUMBLING.] [Dim. of scum.] To cover lightly, or spread thinly, as a painting, drawing, and the like, with opaque or semi-opaque colors, to produce a softened effect.