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

• Lexulous
• Wordscraper
• Wordosaur

n. The state of being valid, authentic or genuine.

n. Having legal force.

n. A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).

n. The quality or state of being valid; strength; force; especially, power to convince; justness; soundness.

n. Legal strength, force, or authority; that quality of a thing which renders it supportable in law, or equity.

n. Value.

n. Strength or power in general.

n. The state or character of being valid.

n. Legal efficacy or force; sufficiency in point of law.

n. Scientific strength or force: as, the validity of a genus.

n. Value.

n. the quality of being valid and rigorous

n. the quality of having legal force or effectiveness

n. the property of being strong and healthy in constitution

"But of course, it must be said that mere validity is not the only important matter."

credibility    believability    credibleness    strength   

subjective validity    universal validity    objective validity    particular validity   

strength    force    justness    soundness    value   

acidity    cupidity    fluidity    humidity    illiquidity    liquidity    lividity    lucidity    morbidity    rancidity   

correctness    authenticity    significance    legality    accuracy    efficacy    soundness    reliability    propriety    usefulness