* Domestic: This is the most common and general antonym, referring to something within one's own country.
* Local: This emphasizes the closeness of something to a specific place.
* Home: This focuses on the opposite of being away from one's place of residence.
* At home: Similar to "home" but emphasizes the state of being in one's home.
* Inland: This is the opposite of "abroad" when referring to travel specifically to a different country, focusing on being within the landmass.
The best antonym will depend on the specific meaning of "abroad" in the context.