cast a shadow upon; "The tall tree overshadowed the house"; "The tragedy overshadowed the couple's happiness" exceed in importance; outweigh; "This problem overshadows our lives right now
If an unpleasant event or feeling overshadows something, it makes it less happy or enjoyable. Fears for the President's safety could overshadow his peace-making mission = cloud
If one building, tree, or large structure overshadows another, it stands near it, is much taller than it, and casts a shadow over it. She said stations should be in the open, near housing, not overshadowed by trees or walls
If you are overshadowed by a person or thing, you are less successful, important, or impressive than they are. Hester is overshadowed by her younger and more attractive sister. = eclipse