ADJ
- dark, dim
- secret
- inner, main, outer
- underground, subterranean
- burial, tomb
- a Bronze Age burial chamber
- torture
- gas
- Millions died in the gas chambers in the war
- decompression
ADJ
- grand, great, large, vast
- high-ceilinged, vaulted
- conference, council, debating
ADJ
- first, lower, second, upper
- elected
- She believes there should be an elected second chamber to replace the House of Lords
- legislative, parliamentary