addlebrained, addled, addleheaded, addlepated, airy, amorphic, amorphous, anarchic, attenuate, attenuated, baggy, beclouded, befuddled, blear, bleared, bleary, blind, blinding, blobby, blurred, blurry, boyish, cat-and-doggish, chaotic, characterless, clear as mud, cloudy, confused, dark, delicate, diaphanous, diluted, dim, disorderly, drippy, driving, drizzling, drizzly, drumming, ethereal, faint, featureless, feeble, filmy, fine, fine-drawn, finespun, flimsy, fogged, foggy, formless, frail, fuddlebrained, fuddled, fuzzy, gauzy, girlish, gossamer, gracile, half-seen, half-visible, hazy, ill-defined, in a fog, in a muddle, inchoate, inconspicuous, indecisive, indefinite, indeterminate, indistinct, indistinguishable, inform, insubstantial, kaleidoscopic, lacy, light, low-profile, lumpen, merely glimpsed, misted, misty
-moisty, mizzly, muddled, muddleheaded, muddy, murky, muzzy, nebulous, nondescript, obscure, opaque, orderless, out of focus, pale, papery, pea-soupy, pelting, pluvial, pluviose, pluvious, pouring, puzzleheaded, rainy, rare, rarefied, semivisible, shadowy, shapeless, showery, slender, slenderish, slight, slight-made, slim, slimmish, slinky, small, smoggy, soupy, streaming, subtle, svelte, sylphlike, tenuous, thin, thin-bodied, thin-set, thin-spun, thinnish, threadlike, transcendent, uncertain, unclear, undefined, unintelligible, unordered, unorganized, unplain, unrecognizable, vague, wasp-waisted, watered, watered-down, watery, weak, willowy, wiredrawn, wispy
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.
opacity, opaqueness, film, cloud, opaque, impervious to light, adiaphanous, dim, turbid, thick, muddy, opacous, obfuscated, fuliginous, cloud, hazy, misty
, foggy, vaporous, nubiferous, muggy, smoky, fumid, murky, dirty.
turbidity, cloudiness, fog, haze, muddiness, haziness, obscurity, nephelometer, turbid, thick, muddy, obfuscated, fuliginous, hazy, misty
, foggy, vaporous, nubiferous, cloudy (cloud), smoky, fumid, murky, dirty.
invisibility, invisibleness, nonappearance, imperceptibility, indistinctness, mystery, delitescence, concealment, latency, invisible, imperceptible, undiscernible, indiscernible, unapparent, non-apparent, out of sight, not in sight, a perte de vue, behind the scenes, behind the curtain, viewless, sightless, inconspicuous, unconspicuous, unseen &c (see), covert, eclipsed, under an eclipse, dim, mysterious, dark, obscure, confused, indistinct, indistinguishable, shadowy, indefinite, undefined, ill- defined, ill-marked, blurred, fuzzy, out of focus, misty
, delitescent, hidden, obscured, covered, veiled (concealed), full many a flower is born to blush unseen.
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.