Doofus (noun)

1. A person who is foolish, incompetent, or lacking in common sense.
2. A person who acts in a silly or foolish way.

Origin:

The word "doofus" comes from the american english, it is a slang term of uncertain origin. it is used to describe a person who is foolish, incompetent, or lacking in common sense.

Examples:

1. He"s such a doofus, he can"t even tie his own shoelaces.
2. Why did you invite him? He's just a doofus.
3. He's a bit of a doofus but he means well.
4. He"s a bit of a doofus but he"s a good friend.
5. He"s a doofus, but he"s our doofus.