Lightness

Noun

 * 1)  the condition of being illuminated
 * 2)  the relative whiteness or transparency of a colour
 * 3)  The product of being illuminated.

Noun

 * 1) The state of having little weight, or little force.
 * 2) Agility of movement.
 * 3) Freedom from worry.
 * 4) Levity, frivolity; inconsistency.
 * 5) *1621, Robert Burton, The Anatomy of Melancholy, New York 2001, p. 75:
 * Seneca [...] accounts it a filthy lightness in men, every day to lay new foundations of their life, but who doth otherwise?
 * Seneca [...] accounts it a filthy lightness in men, every day to lay new foundations of their life, but who doth otherwise?

Adjectives for Lightness
imaginative; graceful; innumerable (pi); dry; extreme; cheerful; exquisite; boyish; sheer; buoyant; inexpressible.

Thesaurus
Munsell chroma, achroma, achromasia, achromatosis, agility, airiness, airy texture, albescence, albinism, albino, albinoism, amiable weakness, anemia, ashiness, attenuation, big deal, blondness, bloodlessness, bounce, breakability, breeziness, brightness, brittleness, buoyancy, cadaverousness, canescence, carefreeness, chalkiness, chambering, changeableness, cheerfulness, chirpiness, chloranemia, chroma, chromatic color, chromaticity, collapse, color quality, colorimetric quality, cool color, coquettishness, creaminess, daintiness, deathly hue, deathly pallor, debonairness, delicacy, destructibility, diaphanousness, dilutedness, dilution, dimness, disintegration, dullness, easy virtue, effeminacy, effervescence, elasticity, emptiness, ethereality, exiguity, exility, expansiveness, exsanguination, faddishness, faddism, fadedness, faintness, fairness, featliness, fickleness, fineness, flightiness, flimsiness, flippancy, fluffiness, foolishness, fragility, frailty, frangibility, frivolity, frivolousness, frostiness, frothiness, futility, gaiety, gauziness, ghastliness, glaucescence, glaucousness, gossameriness, gracility, grizzliness, haggardness, hoariness, hue, human frailty, hypochromia, hypochromic anemia, idleness, inanity, inconstancy, indecisiveness, infirmity of will, inherent vice, insubstantiality, irresolution, jauntiness, laciness, lack of depth, lactescence, laxity, leukoderma, levity, light heart, lightheartedness, lightsomeness, liveliness, lividness, loose morals, looseness, lucence, lucency, lucidity, luminosity, luminousness, mercuriality, mercurialness, milkiness, mistiness, moral weakness, muddiness, neutral color, nimbleness, nugacity, paleness, pallidity, pallidness, pallor, paperiness, pastiness, pearliness, perkiness, pertness, prison pallor, promiscuity, purity, rarity, resilience, resiliency, sallowness, saturation, shallow-wittedness, shallowness, sickliness, sickly hue, silliness, silver, silveriness, skittishness, sleaziness, sleeping around, slenderness, slightness, slimness, snowiness, spryness, subtility, superficiality, swinging, tenuity, thinness, tint, tone, translucence, translucency, triflingness, triteness, triviality, trivialness, undependability, unpredictability, unprofoundness, unprofundity, unreliability, unsubstantiality, vacuity, vagueness, value, vanity, vapidity, velleity, vitiligo, vivacity, volatility, wanness, wantonness, warm color, wateriness, waywardness, weakness, white, white race, whiteness, whitishness, whorishness, wispiness, womanishness

Etymology 1
from light, the noun

Etymology 2
From light:, the adjective.

Anagrams

 * nightless