How do you say American in Cantonese?

There are a few ways to say "American" in Cantonese, depending on the context and desired formality:

Formal:

* 美國人 (meigwok yan) - This is the most common and formal way to say "American." It literally means "American person."

Informal:

* 美國佬 (meigwok lou) - This is a more informal and sometimes derogatory term for "American." It literally means "American guy" and can be seen as offensive in some situations.

* 鬼佬 (gwai lou) - This is a very informal and often derogatory term that can be used to refer to any Westerner, including Americans. It literally means "ghost guy" and is considered offensive by many people.

Other:

* 美式 (meishi) - This means "American style" and can be used to refer to things like American food or American culture.

It's important to be aware of the connotations of each term and choose the most appropriate one for the situation. In most cases, 美國人 (meigwok yan) is the safest and most respectful option.