* Domestic: This is the most common opposite, meaning "relating to or produced in one's own country."
* Native: This implies something originating or belonging to a particular place, often referring to people.
* Local: This signifies something belonging to or characteristic of a particular place, often a smaller area than "domestic."
* National: This refers to something related to a nation as a whole.
* Familiar: This can be the opposite of "foreign" in terms of being known or recognized.
The best opposite for "foreign" will depend on the specific situation you're describing.