A bungler is someone who is clumsy or inept at a task. A BLUNDERBUSS (11 letters) is an archaic firearm that was known for its inaccuracy, which is a fitting metaphor for a bungler. A FUMBLER (7 letters) and a BOTCHER (7 letters) are similar terms for someone who is clumsy or makes mistakes. BUTTERFINGERS (13 letters) is another term for someone who is clumsy with their hands. FOOL (4 letters), DUNCE (5 letters), BLUNDERER (9 letters), BLOCKHEAD (9 letters), BONEHEAD (8 letters), IDIOT (5 letters), OAF (3 letters), LUG (3 letters), foozler (7 letters), KLUTZ (5 letters) are all terms used to describe someone who is clumsy or inept.