muppet
🇺🇸
/ˈmʌpɪt/
🇬🇧
/ˈmʌpɪt/
A person who is not very smart or makes mistakes easily.
Don't worry, he's just a muppet who doesn't know any better.
心配しないで、彼はただのバカで、何も分かっていないだけです。