luminousness

Quality of glowing

Luminousness is the quality of emitting or reflecting light, or of being bright and radiant.

The word overlaps almost entirely with luminosity, though luminousness sounds slightly more literary: the luminousness of the full moon, a luminousness in her expression that suggested inner joy.

Both literal brightness and figurative radiance fall under its meaning.

radiance

brightness

Degree of light emitted

radiance · incandescence · effulgence · resplendence · gleaming · shimmer · luster · sheen · dazzle · glitter

intellectual

clarity

State of being understandable

perspicacity · lucidity · acumen · enlightenment · comprehension · understanding · wisdom · perceptiveness · sharpness · astuteness

spiritual

enlightenment

Profound spiritual awakening

halo · nimbus · beatitude · sanctity · holiness · ethereal · celestial · angelic · glorified · blessed

aesthetic

beauty

Aesthetic excellence

glory · majesty · elegance · brilliance · vibrancy · vividness · richness · opulence · sumptuousness · gorgeousness

Opposites
light emission/presence

luminousnessdarkness

Total absence of light

blackness · dimness · shadowiness · shadiness · dark

clarity/transparency

luminousnessopacity

Impermeability to light

opaqueness · cloudiness · haziness · murkiness · obscureness

vividness/brilliance

luminousnessdullness

Lack of stimulation

dulness · lackluster · drabness · paleness · grayness

Family

illuminate, luminous, illumination, illuminated, luminary, illuminating, pellucid, luminescent, luminescence

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Used worldwide · Timeless · Positive · Everyday, not technical · Rated G