1. 
[syn: bumbling, bungling, butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed]
The Collaborative International Dictionary of English v.0.48:
butterfingered \but"ter*fin`gered\, Butter-fingered
\But"ter-fin`gered\, a.
   Apt to let things fall, or to let them slip away; not
   skillful in using the hands; slippery; careless.
   Syn: bumbling, bungling, ham-fisted, ham-handed, handless,
        heavy-handed, left-handed.
        [1913 Webster + WordNet 1.5]
WordNet (r) 3.0 (2006):
butterfingered
    adj 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 [syn: bumbling, bungling,
           butterfingered, ham-fisted, ham-handed, handless,
           heavy-handed, left-handed]