bedrock Synonyms - page 2

sickbed riverbed sedimentary rock undercarriage pillow lava solid bottom backbone essence essential floor footing foundation fundament fundamental gabbro gneiss granite ground groundsel crux core base baseboard basement bases basis bed bedplate bottom boulder centerpiece centrepiece cobblestone groundsill groundwork pahoehoe pavement plinth porphyry principia principle quartzite quintessence radix riprap roc rock nidus nethermost hardpan