Cynthian, abstract, amorphous, anagalactic, asteroidal, astral, astrologic, astrologistic, astrologous, astronomic, astrophysical, bland, blind, blurred, broad, castellatus, celestial, circumplanetary, cirrose, cirrous, cislunar, clear as mud, cloud-flecked, clouded, cloudy, collective, cumuliform, cumulous, dark, dim, dirty, empyreal, empyrean, equinoctial, extragalactic, faint, featureless, foggy, fuzzy, galactic, general, generalized, generic, gloomy, hazy, heavenly, heavy, heliacal, ill-defined, indefinite, indeterminate, indistinct, intercosmic, interplanetary, intersidereal, interstellar, lenticularis, lunar, lunary, lunate, lunular, lunulate, mammatus, meteoric, meteoritic, misty, muddy, murky, nebular, nebulose, neutral, nimbose, nonspecific, nubilous, obscure, opaque, overcast, overclouded, pale, planetal, planetarian, planetary, planetesimal, semilunar, shadowy, shapeless, sidereal, solar, sphery, squally, star-spangled, star-studded, starry, stellar, stellary, stormy, stratiform, stratous, terrestrial, thunderheaded, transcendent, turbid, uncharacterized, unclear, undifferentiated, unplain, unspecified, uranic, vague, wide, zodiacal
bubble; cloud, bubble, foam, froth, head, spume, lather, suds, spray, surf, yeast, barm, spindrift, cloud, vapor, fog, mist, haze, steam, geyser, scud, messenger, rack, nimbus, cumulus, woolpack, cirrus, stratus, cirrostratus, cumulostratus, cirrocumulus, mackerel sky, mare's tale, dirty sky, curl cloud, frost smoke, thunderhead, nephelognosy, nephograph, nephology, effervescence, fermentation, bubbling, nebula, cloudliness, nebulosity, bubbling, frothy, nappy, effervescent, sparkling, mousseux, frothy, up, cloudy, thunderheaded, vaporous, nebulous
, overcast, the lowring element scowls o'er the darkened lands.
dimness, darkness, paleness, half light, demi-jour, partial shadow, partial eclipse, shadow of a shade, glimmer, gliming, nebulosity, cloud, eclipse, aurora, dusk, twilight, shades of evening, crepuscule, cockshut time, break of day, daybreak, dawn, moonlight, moonbeam, moonglade, moonshine, starlight, owl's light, candlelight, rushlight, firelight, farthing candle, dim, dull, lackluster, dingy, darkish, shorn of its beams, dark, faint, shadowed forth, glassy, cloudy, misty, blear, muggy, fuliginous, nebulous
, nebular, obnubilated, overcast, crepuscular, muddy, lurid, leaden, dun, dirty, looming, pale, confused.
unintelligibility, incomprehensibility, imperspicuity, inconceivableness, vagueness, obscurity, ambiguity, doubtful meaning, uncertainty, perplexity, spinosity, obscurum per obscurius, mystification, latency, transcendentalism, paradox, oxymoron, riddle, enigma, puzzle, diagnus vindice nodus, sealed book, steganography, freemasonry, pons asinorum, asses' bridge, high Dutch, Greek, Hebrew, jargon, unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable, incognizable, inexplicable, inscrutable, inapprehensible, incomprehensible, insolvable, insoluble, impenetrable, illegible, as Greek to one, unexplained, paradoxical, enigmatic, enigmatical, puzzling (secret), indecipherable, obscure, dark, muddy, clear as mud, seen through a mist, dim, nebulous
, shrouded in mystery, opaque, dense, undiscernible, misty, hidden, latent, indefinite, garbled, perplexed, undetermined, vague, loose, ambiguous, mysterious, mystic, mystical, acroamatic, acroamatical, metempirical, transcendental, occult, recondite, abstruse, crabbed, inconceivable, inconceptible, searchless, above comprehension, beyond comprehension, past comprehension, beyond one's depth, unconceived, inexpressible, undefinable, incommunicable, unpredictable, unforeseeable, it's Greek to me.