THESAURUS
indistinct
aleatoric, aleatory, alike, ambiguous, amorphous, barely audible, blear, bleared, bleary, blind, blobby, blurred, blurry, breathy, broad, chance, chancy, chaotic, choked, choking, clear as mud, cloudy, confused, croaking, dark, decrescendo, dim, disordered, distant, drawling, drawly, dysphonic, equivocal, faint, faint-voiced, feeble, filmy, foggy, fuzzy, general, gentle, guttural, half-heard, half-seen, half-visible, harsh, hawking, hazy, hit-or-miss, hoarse, ill-defined, illegible, imprecise, inaccurate, inarticulate, inchoate, incoherent, inconspicuous, indecisive, indefinable, indefinite, indeterminable, indeterminate, indiscernible, indistinctive, indistinguishable, inexact, inseparable, interchangeable, lax, lisping, loose, low, low-profile, merely glimpsed, mispronounced, misty, muddy, muffled, murky, murmured, muzzy, nasal, nebulous, nonspecific, obscure, opaque, orderless, out of focus, pale, pianissimo, piano, quavering, random, scarcely heard, semivisible, shadowed forth, shadowy, shaking, shaky, shapeless, snuffling, soft, soft-sounding, soft-voiced, standard, stereotyped, stifled, stochastic, strangled, subaudible, subdued, sweeping, thick, throaty, transcendent, tremulous, twangy, uncertain, unclear, undefined, undestined, undetermined, undifferentiated, undiscriminated, undistinguishable, undistinguished, uniform, unintelligible, unplain, unrecognizable, unspecified, vague, veiled, velar, weak, weak-voiced, whispered, without distinction
ROGET THESAURUS
indistinct
Invisibility
N
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.