overshade

from The Collaborative International Dictionary of English v.0.48

Overshade \O`ver*shade`\, v. t. [AS. ofersceadwian. See {Over},
   and {Shade}, and cf. {Overshadow}.]
   To cover with shade; to render dark or gloomy; to overshadow.
   --Shak.
   [1913 Webster]