bungling in WordNet English dictionary

1. lacking physical movement skills, especially with the hands
   "a bumbling mechanic"; "a bungling performance"; "ham-handed governmental interference"; "could scarcely empty a scuttle of ashes, so handless was the poor creature"- Mary H. Vorse
   bumbling  bungling  butterfingered  ham-fisted  ham-handed  handless  heavy-handed  left-handed 
   
2. showing lack of skill or aptitude
   "a bungling workman"; "did a clumsy job"; "his fumbling attempt to put up a shelf"
   bungling  clumsy  fumbling  incompetent