Source : WordNet®

bumbling
     adj : not skillful in physical movement 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: {bungling}, {butterfingered},
            {ham-fisted}, {ham-handed}, {handless}, {heavy-handed},
            {left-handed}]