Cloudy, indistinct, obscure.
Hard to see through, as a fog or mist.
Dark, dim, gloomy.
Dishonest, shady.
Allowing the passage of light; translucent or transparent.
Easily understood; clear.
Of music or some other sound: not discordant or harsh; clear and pure-sounding.
Of a person, their mind, etc.: able to think and understand clearly; not confused; clear, sharp.