This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The condition or property of being solid.

n. Soundness of mind, moral character, or finances.

n. The state or quality of being solid.

n. Moral firmness; validity; truth; certainty.

n. The solid contents of a body; volume; amount of inclosed space.

n. The state or quality of being solid; density; consistency, -- opposed to fluidity; compactness; fullness of matter, -- opposed to openness or hollowness; strength; soundness, -- opposed to weakness or instability; the primary quality or affection of matter by which its particles exclude or resist all others; hardness; massiveness.

n. Moral firmness; soundness; strength; validity; truth; certainty; -- as opposed to weakness or fallaciousness.

n. The solid contents of a body; volume; amount of inclosed space.

n. The state or property of being solid.

n. The absolute impenetrability attributed by some metaphysicians to matter.

n. Fullness of matter: opposed to hollowness.

n. Massiveness; substantiality; hence, strength; stability.

n. Strength and firmness in general; soundness; strength; validity; truth; certainty.

n. In geometry, the quantity of space occupied by a solid body.

n. A solid body or mass.

n. the consistency of a solid

n. the quality of being solid and reliable financially or factually or morally

n. state of having the interior filled with matter

"Only I have thought the term solidity the more proper to express this idea, not only because of its vulgar use in that sense, but also because it carries something more of positive in it than impenetrability; which is negative, and is perhaps more a consequence of solidity, than solidity itself."

weakness    openness    instability    hollowness    fluidity   

reliableness    reliability    dependableness    dependability    fullness   

measure of solidity    geometrical solidity    physical solidity   

solidness    density    certainty    validity    strength    soundness    firmness    hardness    compactness    volume   

acidity    fluidity    humidity    liquidity    morbidity    rapidity    rigidity    superfluidity    timidity    turbidity   

clearness    firmness    completeness    lightness    breadth    durability    smoothness    hardness    permanence    stability