- 1 overshadow somebody/something to make someone or something seem less important or successful He had always been overshadowed by his elder sister. Domestic policy was soon overshadowed by political unrest abroad.
- 2overshadow something to make an event less enjoyable than it should be synonym cloud News of the accident overshadowed the day's events.
- 3overshadow something to throw a shadow over something The garden is overshadowed by tall trees.
NAmE//ˌoʊvərˈʃædoʊ//[often passive]Verb Forms present simple I / you / we / they overshadow
he / she / it overshadows
past simple overshadowed
-ing form overshadowing