The act of removing or obscuring the outline or boundary of something, making it less distinct or clear.
From dis- (reversal, negation) + limn (to draw or paint on a surface, from Middle English linnen, ultimately from Latin luminare meaning to light up). The prefix dis- reverses the action of making something visible or outlined.
Limn is a beautifully specific word meaning to sketch or outline something, often used in art and literature—so dislimning is its opposite, creating darkness or obscurity where there was once clear definition. It's the kind of archaic word poets use to describe how twilight erases the sharp edges of the landscape.
Complete word intelligence in one call. Free tier — 50 lookups/day.