1. The condition or quality of being light.

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

• lighness,
• lightns,
• bightness,
• tighness,
• lightnes,
• thightness,
• sightness,
• rightnes,
• mightyness,
• limitness,
• leightness,
• lisitness,
• lighrness,
• lightnerss,
• lghtness,
• ligtness,
• ligthness,
• lighntess,
• lightenss,
• nightness

• licitness,
• light meter,
• Leighton,
• lightning,
• liquidness,
• lightens,
• lightner,
• tightness,
• rightness,
• light time,
• light unit,
• lighten.

The adverb form of the word "lightness" is "lightly".

The adjective form of the word "lightness" is "light".

The plural of the "lightness" can be the "lightnesses".

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