opaque

/oʊˈpeɪk/
noun
  1. Something that is opaque, especially a dark or non-transparent color or substance.
    • The printer ran out of opaque for the dark areas of the image.
    • In painting, you can mix an opaque with a transparent to create a new effect.
    • She prefers opaques for her watercolor work because they cover mistakes easily.
adjective
  1. Not able to be seen through; not transparent.
    • He held the opaque bottle up to the light but could not see inside.
    • The bathroom window is made of opaque glass for privacy.
    • The liquid turned from clear to opaque when we added the chemical.
  2. Difficult to understand or explain; unclear.
    • Her writing style is intentionally opaque, leaving readers to guess her meaning.
    • The politician's answer was opaque and avoided the real question.
    • The instructions were so opaque that nobody could follow them.