solidity
firmness / stability / reliability / solid state
Noun
This term describes a state of firmness that spans both the physical and the intellectual realms. In a material sense, it evokes the feeling of density and resistance to pressure, characterizing objects that are compact and unchanging in shape. When applied to arguments or evidence, it suggests a lack of gaps or weaknesses. It conveys a sense of dependability and structural integrity, implying that a conclusion is built on a foundation that cannot be easily shaken or refuted.
Meanings
Noun
The quality or state of being firm, hard, or stable in structure.
"The solidity of the granite foundation ensured the building would last for centuries."