obscure synonyms

dense cloudy

difficult involved dark complex secret loose complicated confused uncertain vague mysterious invisible doubtful unclear concealed confusing ambiguous dim dubious contradictory intricate mystical questionable incomprehensible puzzling indefinite enigmatic veiled unidentified inconceivable inexplicable murky hazy undisclosed illogical esoteric indeterminate impenetrable insoluble cryptic unreadable unintelligible imprecise inscrutable equivocal indistinct undefined indecisive illegible perplexing unaccountable unfathomable abstruse inexact recondite ill-defined