1. not bright or clear; having little light
2. not clearly seen, heard, or remembered
3. not intelligent; slow to understand
Usage: informal

1. to make or become less bright

Examples

• The dim light made it hard to read.
• She had only dim memories of her childhood.
• The stars looked dim through the clouds.
• He’s a bit dim when it comes to math.
• Please dim the lights for the movie.
• The sunset began to dim as night approached.
• The old photograph had grown dim with age.