solidity

Plural: solidities

Noun

• The quality of being firm, strong, or reliably substantial.
• the consistency of a solid
• state of having the interior filled with matter
• the quality of being solid and reliable financially or factually or morally
  • "the solidity of the evidence worked in his favor"
• The state or quality of being solid.
• Moral firmness; validity; truth; certainty.
• The solid contents of a body; volume; amount of enclosed space.

Examples

• The solidity of his word choices ensured his victory in Words With Friends.

Synonyms

solidness, compactness, consistency, density, fullness, hardness, massiveness, soundness, strength

Antonyms

hollowness, porosity, fluidity, instability, openness, weakness