abstruse esoteric recondite cloaked concealed disguised masked shrouded beclouded bedimmed befogged clouded cloudy dim faint foggy fuzzy hazy indistinct indistinguishable misty muddy obfuscatory obnubilated obscurant shaded shadowlike shadowy sphinxlike indefinite inexact inexplicit noncommittal questionable unclear uncertain undefined undetermined vague impenetrable incomprehensible indecipherable inexplicable eerie uncanny weird impalpable inappreciable intangible invisible unanswerable unknowable baffling bewildering confounding confusing mystifying perplexing puzzling unfathomable circuitous indirect roundabout complex complicated difficult obtuse comprehensible fathomable intelligible knowable legible pellucid understandable bright distinct evident self-evident self-explanatory certain firm strong sure defined determined direct straightforward definite exact explicit appreciable palpable tangible visible blatant patent unmistakable dark darkling fuzzy murky obscure shadowy vague ambiguous equivocal imponderable incomprehensible unfathomable unintelligible unsearchable inexplicable unaccountable unexplainable unanswerable unknowable metaphysical mystical numinous supernatural abstruse esoteric recondite baffling befuddling bewildering confounding confusing disorienting mystifying perplexing puzzling crepuscular twilit moonless starless sunless cloudy dull dulled lackluster shadowlike shadowy shady gray leaden pale beclouded befogged clouded foggy fuliginous misty smoggy soupy blue dejected depressed despondent down droopy hangdog inconsolable low melancholic melancholy mirthless sad unhappy woebegone woeful dim discomfiting discouraging disheartening dismaying dispiriting distressful distressing upsetting desperate hopeless pessimistic lamentable mournful plaintive sorrowful colorless drab dull dour grim lowering lowery menacing negative oppressive threatening