abstract, aimless, airy, aleatoric, aleatory, ambiguous, amorphic, amorphous, amphibological, anarchic, attenuate, attenuated, baggy, bland, blank, blear, bleared, bleary, blind, blobby, blurred, blurry, boyish, broad, capricious, casual, chance, chancy, chaotic, characterless, clear as mud, clouded, cloudy, collective, concealed, confused, dark, delicate, desultory, diaphanous, diluted, dim, disarticulated, discontinuous, disjunct, disordered, disorderly, dispersed, disproportionate, doubtful, dreamlike, dreamy, dull, empty, equivocal, erratic, ethereal, expressionless, faint, featureless, feeble, filmy, fine, fine-drawn, finespun, fitful, flimsy, foggy, formless, frail, frivolous, fuzzy, gauzy, general, generalized, generic, girlish, gossamer, gracile, gratuitous, half-seen, half-visible, haphazard, hazy, hidden, hit-or-miss, ill-defined, immethodical, imprecise, in doubt, inaccurate, inchoate, incoherent, inconspicuous, inconstant, indecisive, indefinable, indefinite, indeterminable, indeterminate, indiscriminate, indistinct, indistinguishable, inexact, inexplicit, inform, insubstantial, irregular, irresolute, kaleidoscopic, lacy, lax, light, loose, low-profile, lumpen, meaningless, merely glimpsed, misshapen, misty, murky, mushy, nebulous, neutral, nondescript, nonspecific, nonsymmetrical, nonsystematic, nonuniform, obscure, opaque, orderless, out of focus, pale, papery, planless, promiscuous, puzzled, random, rare, rarefied, semivisible, senseless, shadowed forth, shadowy, shapeless, shrouded, slender, slenderish, slight, slight-made, slim, slimmish, slinky, small, spasmodic, sporadic, stochastic, straggling, straggly, subconscious, subliminal, subtle, svelte, sweeping, sylphlike, systemless, tenebrous, tenuous, thin, thin-bodied, thin-set, thin-spun, thinnish, threadlike, transcendent, unarranged, uncertain, uncharacterized, unclassified, unclear, undecided, undefined, undestined, undetermined, undifferentiated, undirected, unexplained, unfixed, ungraded, unintelligible, unjoined, unmethodical, unordered, unorganized, unplain, unrecognizable, unsettled, unsorted, unspecific, unspecified, unsubstantial, unsymmetrical, unsystematic, ununiform, vacant, vacillating, vacuous, vaporous, vapory, veiled, wandering, wasp-waisted, watered, watered-down, watery, wavering, weak, wide, willowy, wiredrawn, wishy-washy, wispy
uncertainty, incertitude, doubt, doubtfulness, dubiety, dubitation, dubitancy, dubitousness, hesitation, suspense, perplexity, embarrassment, dilemma, bewilderment, timidity, vacillation, diaporesis, indetermination, vagueness, haze, fog, obscurity, ambiguity, contingency, dependence, dependency, double contingency, possibility upon a possibility, open question, onus probandi, blind bargain, pig in a poke, leap in the dark, something or other, needle in a haystack, needle in a bottle of hay, roving commission, precariousness, fallibility, uncertain, casual, random, changeable, doubtful, dubious, indecisive, unsettled, undecided, undetermined, in suspense, open to discussion, controvertible, in question, vague
, indeterminate, indefinite, ambiguous, equivocal, undefined, undefinable, confused, mystic, oracular, dazed, perplexing, enigmatic, paradoxical, apocryphal, problematical, hypothetical, experimental, unpredictable, unforeseeable (unknowable), fallible, questionable, precarious, slippery, ticklish, debatable, disputable, unreliable, untrustworthy, contingent, contingent on, dependent on, subject to, dependent on circumstances, occasional, provisional, unauthentic, unauthenticated, unauthoritative, unascertained, unconfirmed, undemonstrated, untold, uncounted, in a state of uncertainty, in a cloud, in a maze, bushed, off the track, ignorant, afraid to say, out of one's reckoning, astray, adrift, at sea, at fault, at a loss, at one's wit's end, at a nonplus, puzzled, lost, abroad, d_esorient_e, distracted, distraught, pendente lite, sub spe rati, Heaven knows, who can tell? who shall decide when doctors disagr.
intuition, instinct, association, hunch, gut feeling, presentiment, premonition, rule of thumb, superstition, astrology, faith (supposition), sophistry, paralogy, perversion, casuistry, jesuitry, equivocation, evasion, chicane, chicanery, quiddet, quiddity, mystification, special pleading, speciousness, nonsense, word sense, tongue sense, false reasoning, vicious reasoning, circular reasoning, petitio principii, ignoratio elenchi, post hoc ergo propter hoc, non sequitur, ignotum per ignotius, misjudgment, false teaching, sophism, solecism, paralogism, quibble, quirk, elenchus, elench, fallacy, quodlibet, subterfuge, subtlety, quillet, inconsistency, antilogy, a delusion, a mockery, and a snare, claptrap, cant, mere words, lame and impotent conclusion, meshes of sophistry, cobwebs of sophistry, flaw in an argument, weak point, bad case, overrefinement, hairsplitting, intuitive, instinctive, impulsive, independent of reason, anterior to reason, gratuitous, hazarded, unconnected, unreasonable, illogical, false, unsound, invalid, unwarranted, not following, inconsequent, inconsequential, inconsistent, absonous, absonant, unscientific, untenable, inconclusive, incorrect, fallacious, fallible, groundless, unproved, non sequitur, it does not follow, deceptive, sophistical, jesuitical, illusive, illusory, specious, hollow, plausible, ad captandum, evasive, irrelevant, weak, feeble, poor, flimsy, loose, vague
, irrational, nonsensical, foolish, frivolous, pettifogging, quibbling, finespun, overrefined, at the end of one's tether, au bout de son latin, intuitively, by intuition, illogically, non constat, that goes for nothing.
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.