o·ver·shad·ow / ˌōvərˈshadō/ • v. [tr.] tower above and cast a shadow over: an enormous oak tree stood overshadowing the cottage. ∎ fig. cast a gloom over: it is easy to let this feeling of tragedy overshadow his story. ∎ appear much more prominent or important than: his competitive nature often overshadows the other qualities. ∎ (often be overshadowed) be more impressive or successful than (another person): he was always overshadowed by his brilliant elder brother.