bumbling, bungling, butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed

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

• maladroit — not adroit