bungler
🇺🇸
/ˈbʌŋɡlər/
🇬🇧
/ˈbʌŋɡlə(r)/
someone who does things poorly or without skill
The bungler accidentally broke the vase while trying to clean it.
这个办事不利的人在试图清洁花瓶时不小心把它打碎了。