strong foundation
- solidFirm matter state
- bedrockSolid stone underground
- cornerstoneFoundational building block
- stableSecure and unchanging
- groundedStable and realistic
roots · anchor · base · groundwork · sturdy · reliable · concrete · footing · pillars · deep · secure · steadfast · building · support · lasting · rock · structural · firm
structural stability
strong foundationshaky ground
Precarious position or situation
shifting ground · built on sand · foundationless · quicksand · house of cards