opaque
1 clouded, cloudy, dim, dull, filmy, hazy, impenetrable, lustreless, muddied, muddy, murky, obfuscated, turbid
2 abstruse, baffling, cryptic, difficult, enigmatic, incomprehensible, obscure, unclear, unfathomable, unintelligible
1 bright, clear, crystal clear, limpid, lucid, pellucid, transparent, transpicuous
2 clear, crystal clear, lucid