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Showing results for lightless. Search instead for flightles.
Definitions

lightless

[lahyt-lis] / ˈlaɪt lɪs /
ADJECTIVE
dark
Synonyms
STRONGEST
black cloudy darkened dim dingy drab dull foggy gloomy misty murky overcast shadowy somber
STRONG
dun faint
WEAK
aphotic atramentous blackish caliginous cimmerian clouded crepuscular dusky ill-lighted indistinct inky lurid nebulous obfuscous obscure opaque pitch-black pitch-dark pitchy rayless shaded shady sooty stygian sunless tenebrous unlighted unlit vague
Antonyms
STRONGEST
bright cheerful clean clear distinct good happy intelligent joyful light luminous smart sparkling sunny vivacious
WEAK
apparent brilliant encouraging evident hopeful illuminated lucid manifest moral plain pleased radiant shining visible vivid
ADJECTIVE
dim
Synonyms
STRONGEST
blurred cloudy dark dingy dull faint fuzzy gloomy lackluster murky shadowy vague
STRONG
dusk faded gray mat muted obscured overcast pale sullied tarnished
WEAK
blah bleary caliginous dreary dusky flat ill-defined indistinct monotone monotonous opaque poorly lit tenebrous unclear unilluminated weak
Antonyms
STRONGEST
bright cheerful clear distinct encouraging happy light lively luminous shining sparkling vivacious
WEAK
brilliant favorable good intelligent smart
ADJECTIVE
dusky
Synonyms
STRONGEST
smoky
WEAK
adusk bistered caliginous cloudy crepuscular dark darkish dim dull gray obscure overcast sable shadowy shady tenebrous twilight twilit unilluminated veiled
Antonyms
STRONGEST
vivid
WEAK
bright clear light
ADJECTIVE
gloomy
Synonyms
STRONGEST
bleak cloudy dim dismal dreary dull forlorn funereal murky overcast somber
WEAK
caliginous cheerless clouded crepuscular desolate dusky obscure overclouded sepulchral shadowy tenebrous unilluminated unlit wintry
Antonyms
STRONGEST
bright cheerful clear happy hopeful intelligent joyful light lively luminous pleasant smart sunny
WEAK
animated content encouraged encouraging exhilarating sparkling uplifting vivacious
ADJECTIVE
obscure
Synonyms
STRONGEST
murky
STRONG
blurred clouded dim dusk faint obfuscated veiled
WEAK
caliginous dark dense dusky fuliginous gloomy indistinct shady somber tenebrous umbrageous unilluminated unlit
Antonyms
STRONG
clear distinct
WEAK
apparent bright explicit obvious perceptible visible
ADJECTIVE
tenebrous
Synonyms
WEAK
ambiguous amphibological caliginous dim dingy dusk dusky equivocal gloomy murky obscure shadowy shady somber sunless uncertain unclear unexplicit unilluminated unintelligible unlit vague
Antonyms
WEAK
inviting light

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While you can’t help but appreciate the cherry red of the deep-sea atolla jellyfish, you will also learn why its unusual pigment persists in the lightless depths.

From The Wall Street Journal • Nov. 21, 2025

Much of the deep ocean is vacant, with extremely cold, lightless regions making it difficult for life as we know it to survive.

From Salon • May 21, 2025

Today, there are more than 300 species of anglerfish, which makes them the most varied family of vertebrates in the ocean’s lightless zone.

From New York Times • May 30, 2024

The incident left her concussed, needing to stay in a lightless room for five days and only worsened the chronic migraines she has battled as an adult.

From Los Angeles Times • Jan. 7, 2024

Penelope willed her heart not to race as she led them up the lightless stairs.

From "The Interrupted Tale" by Maryrose Wood