clear as dishwater

esoteric perplexing

Greek to me abstract complex complicated deep enigmatic heavy hidden incomprehensible intricate involved muddy obscure profound puzzling recondite subtle unfathomable vague

clear concrete easy lucid obvious plain simple

cryptic dubious enigmatic equivocal inconclusive obscure opaque puzzling questionable uncertain unclear vague

doubtful enigmatical indefinite indeterminate inexplicit muddy multivocal polysemous tenebrous unintelligible

certain clear definite determined known obvious plain sure unambiguous understandable unquestionable

explicit lucid

cloudy cryptic doubtful dubious enigmatic enigmatical equivocal inconclusive indefinite indeterminate muddy nebulous obscure opaque puzzling questionable tenebrous uncertain unclear unintelligible vague

at issue borderline chancy clouded cryptic doubtful dubious dubitable enigmatic enigmatical equivocal in doubt in question inconclusive indecisive indefinite indeterminate inexplicit muddy obscure opaque problematic puzzling questionable tenebrous uncertain unclear unintelligible unsure vague