bungler

n person who bungles 笨手笨脚的人: You incompetent bungler! 你这个成事不足败事有余的家伙!

bumf (also bumph), bump, bumper, bumper-to-bumper, bumph, bumpily, bumpiness, bumpkin, bumptious, bumptiously, bumptiousness, bumpy, bun, bun-fight, bunch, bundle, bung, bung-hole, bungalow, bungle, bungling, bunion, bunk, bunker, bunkum, bunny, Bunsen burner, bunting, buoy, buoyancy, buoyant, buoyantly, bur (also burr), burble, burden, burdensome, bureau, bureaucracy, bureaucrat, bureaucratic,