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Adjective: opaque (opaquer,opaquest)  ow'peyk
  1. Not transmitting light or other radiation; impenetrable to sight
    "opaque windows of the jail"; "opaque to X-rays"
  2. Hard or impossible to understand
    - unintelligible

Derived forms: opaquer, opaquest

See also: cloudy, fogged, foggy, frosted, glaucous, incomprehensible, lightproof, light-tight, milklike, milky, mirky [archaic], muddy, murky, opacity, opaqueness, semiopaque, solid, turbid, unclear, uncomprehensible, whitish

Antonym: clear

Encyclopedia: Opaque