Synonyms of boulder
- 1 Syllable
- shelf, crag, mass, rock, earth, crust, reef, slag, slab
- 2 Syllables
- gravel, rubble, lodge, pebble, bedrock, metal, crystals, quarry, cromlech, ore, lava
- 3 Syllables
- mineral, megalith, stonework
- 4 Syllables
- cobblestone, promontory