opaque.

1. Blocking light rather than letting it pass through.

2. Difficult to understand or examine because its meaning or workings are not clear.

Use it for

Words that belong together

• opaque glass
• an opaque screen
• an opaque liquid

On the page

An opaque panel concealed the equipment behind the wall.

Usage notes

Primary category: sensory / description. Forms: Comparative more opaque; superlative most opaque. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: description. Commonness: moderately common.