bum•blingPronunciation: (bum'bling), [key]
liable to make awkward blunders: a bumbling mechanic.
clumsily incompetent or ineffectual: bumbling diplomacy.
the act or practice of making blunders: The bumbling of their officers cost them the battle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.