Ante chambers, also known as anterooms or waiting rooms, are spaces usually located at the entrance of a building or room. Antonyms for ante chambers can include "inner sanctum," "hidden room," or "private enclave." These terms describe spaces that are secluded and away from the public eye, in contrast to the open and accessible nature of an ante chamber. Other antonyms might include "outer space," "open field," or "unbounded expanse," all of which signify vast, uncontained areas that are the opposite of the confined and contained nature of an ante chamber. In essence, the antonyms for ante chambers describe spaces that are the exact opposite of what an ante chamber represents.