To identify the antonym of ‘Transparent’, we need to analyze the definitions of the given options:
Option
Meaning
Clear
Permitting passage of light so that objects behind can be seen; transparent.
Invisible
Not able to be seen.
Opaque
Not able to be seen through; not transparent.
Luminous
Giving off light; bright or shining.
Based on these definitions, ‘Opaque’ is the opposite of ‘Transparent’. ‘Opaque’ signifies that light cannot pass through, rendering an object impossible to see through. Conversely, ‘Transparent’ describes something through which light can pass freely, allowing clear visibility.