1. The quality of being precious: valuableness.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• prciousness,
• prefidiousness,
• perrilousness,
• peeviousness,
• previousness,
• preciiousness,
• preciouesness,
• preciouseness,
• preciousnesss,
• preciousneses,
• preciousnesse,
• preciosness,
• preciousnes,
• preciuosness,
• preciptousness,
• precioseness,
• dieciousness,
• previusness,
• previosness,
• previouness

• precisely,
• preciously,
• precision,
• prosecution,
• precociousness,
• projectile,
• precious metal,
• precocious,
• preciseness,
• projection,
• preciosity,
• precious stone,
• precious coral.

The adjective form of the word "preciousness" is "precious".

The plural of the "preciousness" can be the "preciousnesses".

The singular of the "preciousness" can be the "preciousness".