Why this word is great
UMBRATE — [Verb] To cast a shadow upon; to shade or darken partially. From the Latin umbratus, past participle of umbrare ("to shade"), from umbra ("a shade, shadow"). Unlike "adumbrate," which sketches a figurative outline, or "obscure," which aims for total concealment, "umbrate" is the quiet, literal act of shadowing. It is the slow crawl of an oak's bough across a sunlit book, the violet coolness a cliff pours over a river at dusk, or the precise moment a cloud's edge blunts the glare on a field of wheat—a gentle, daily acknowledgment that to see a thing clearly, you must also see where the light fails.