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Meaning of bumbleheaded

bum•ble•head•ed

Pronunciation: (bum'bul-hed"id), [key]
— adj.
  1. clumsy, plodding, or foolish: He stumbled through the talk in his bumbleheaded way.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.