How do you say goofball?

"Goofball" is already a perfectly good word in English! It's a slang term for someone who is silly, clumsy, or goofy.

However, if you're looking for other ways to say "goofball," here are a few options:

Similar meaning, more formal:

* Klutz

* Dork

* Nitwit

* Airhead

* Goon

Similar meaning, more informal:

* Doofus

* Spaz

* Wacko

* Nutcase

* Ditz

More positive connotations:

* Silly goose

* Funny guy/gal

* Clown

* Character

The best word to use will depend on the specific context and your relationship with the person you're talking about.