from The Century Dictionary.
- noun One who throws a shade over anything.
from the GNU version of the Collaborative International Dictionary of English.
- noun One that throws a shade, or shadow, over anything.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun One who, or that which,
from Wiktionary, Creative Commons Attribution/Share-Alike License
overshadow + -er
And overshadower-in-chiefSarah Palin seems to agree:
HALPERIN: Always an issue with Bill Clinton because he's the big overshadower, right?