Definition

The quality of being difficult to see through or understand; lack of transparency.

Example

The opacity of the glass made it hard to see inside the room.

Conversation

Have you noticed the opacity of the paint in this room?

Yeah, it definitely makes it feel darker than it should.

I think we should go for a lighter color to reduce that opacity.

Good idea! A brighter shade would really open up the space.

Synonyms & Antonyms

Root Explanation

Opacity → It is formed from "opacus" (meaning dark or shaded) and the suffix "-ity" (meaning the state or quality of). The word "opacity" refers to the quality of being opaque or not allowing light to pass through.

Memory Tip

Think of something that is 'dark' or 'shaded' ('opacus') — that helps you remember that 'opacity' means the quality of not letting light through.

Visually Confused Words