What is a homophone for boader?

There isn't a perfect homophone for "boarder", as it's a rather unique word. However, depending on the context, you might consider these possibilities:

* "Border" is a homophone if you're talking about a boundary or edge.

* "Board" is a homophone if you're referring to a flat piece of wood, a group that governs an organization, or the act of getting on a ship or plane.

It's important to remember that the choice of the right word depends on the specific context and meaning you want to convey.