General Antonyms:
* Open space: This works if "chamber" refers to a closed or enclosed space.
* Exterior: This is the opposite of "interior" which "chamber" can sometimes signify.
* Public: This is the opposite of "private" which "chamber" can imply, especially in the context of a private meeting or room.
Context-Specific Antonyms:
* Hall: If "chamber" refers to a small room, "hall" could be an antonym as it implies a large open area.
* Outdoor: If "chamber" refers to an indoor room, "outdoor" would be the opposite.
* Large space: This is a more general opposite of "small space" which "chamber" can imply.
* Empty space: This is the opposite of a "filled space" which "chamber" can imply, especially in the context of a chamber containing something, like a chamber of a gun.
Other Considerations:
* Context is key: The best antonym will depend on the specific situation and how "chamber" is being used.
* Figurative meaning: "Chamber" can have a figurative meaning, like "the chambers of the heart," in which case finding an antonym is more difficult.
It's important to analyze the context and intended meaning of "chamber" before choosing an antonym.