#1 overshadow v. [dominate, eclipse] be greater in significance than; "the tragedy overshadowed the couple's happiness". wn
#2 overshadow v. [shadow, dwarf] make appear small by comparison; "This year's debt dwarfs that of last year". wn
#3 overshadow v. cast a shadow upon; "The tall tree overshadowed the house". wn
vizzz