opaque
non-luminous
nonlight
dull
dim
subdued
lightlessness
light-tight
lightproof
photoneutral
darkness
opacity
dark
lucifugally
diaphanic
luminous energy
lost
nonphotonic
nonphotic
owl light
lucifugal
interreflection
lucifugous
holophotal
photoexposed
obscureness
softness
obscurity
unlightable
darkly
diffractive
in darkness
radiancy
lighting
gossamer-thin
light
photoentrainable
luster
photodependent
blackness
dry light
luminiferous
lustre
sheen
pitch blackness
practical light
multilight
shininess
total darkness
black
pellucid
crystal clear
limpid
play
lucid
semidark
unilluminating
shimmer
nonluminosity
transparent
photomotile
aeriform
optical opacity
crystalline
clearness
episcopic
photoinsensitive
aphotic
lightless
coruscate
illuminate
diffused
diffuse
flicker
underexpose
unglowing
beamy
autokinesis
glint
soft
spark
sparkling
aerial
nontransparent
aery
airy
inattentional blindness
opaque
non-luminous
nonlight
dull
dim
subdued
light-tight
lightproof
photoneutral
diaphanic
lost
nonphotonic
nonphotic
lucifugal
lucifugous
holophotal
photoexposed
dark
unlightable
diffractive
gossamer-thin
photoentrainable
photodependent
luminiferous
multilight
light
pellucid
crystal clear
limpid
lucid
semidark
unilluminating
transparent
photomotile
aeriform
crystalline
episcopic
photoinsensitive
aphotic
lightless
diffused
diffuse
unglowing
beamy
soft
sparkling
aerial
nontransparent
aery
airy
lucifugally
darkly
in darkness
lightlessness
darkness
opacity
dark
luminous energy
owl light
interreflection
obscureness
softness
obscurity
radiancy
lighting
light
luster
blackness
dry light
lustre
sheen
pitch blackness
practical light
shininess
total darkness
black
play
shimmer
nonluminosity
optical opacity
clearness
flicker
autokinesis
glint
spark
inattentional blindness
coruscate
illuminate
underexpose
English words for 'not transmitting or reflecting light or radiant energy; impenetrable to sight'
As you may have noticed, above you will find words for "not transmitting or reflecting light or radiant energy; impenetrable to sight". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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