scumbling

verb

1. (form-of, gerund, participle, present)present participle and gerund of scumble

noun

1. An application of scumbling; an opaque glaze.

   “On Martha's Vineyard, Summer 1962 is a canvasful of brushstrokes and scumblings, some wet into wet, some dry-brushed, with accidental runs of thinned paint allowed to remain.”