not permitting penetration or passage; impenetrable:
inborn, native, inherent, originating in intelligence
To authorize or decree a particular action, as by the enactment of law. verb; A command or authorization to act in a particular way on a public issue given by the electorate to its representative noun
c.1510, from M.Fr. opulence, from L. opulentia, from opulentus "wealthy," dissimilated from *op-en-ent-, related to ops "wealth, power, resources," opus "work, labor, exertion," from PIE base *op- "to work, produce in abundance" (see opus).