adumbrate (v.)

1580s, "to outline, to sketch," from Latin adumbratus "sketched, shadowed in outline," also "feigned, unreal, sham, fictitious," past participle of adumbrare "cast a shadow over;" in painting, "to represent (a thing) in outline," from ad "to" (see ad-) + umbrare "to cast in shadow," from PIE root *andho- "blind; dark" (see umbrage). Meaning "to overshadow" is from 1660s in English. Related: Adumbrated; adumbrating.