bottomless well (noun) horn of plenty: plentiful resource
Sinonime: clear as dishwater,
cryptic,
doubtful,
dubious, enigmatic, enigmatical,
equivocal, inconclusive,
indefinite,
indeterminate, inexplicit, muddy, multivocal, obscure,
opaque, polysemous, puzzling,
questionable,
tenebrous,
uncertain,
unclear, unintelligible, vague
Antonime: clear,
definite,
explicit, lucid