- "She wasn't exactly the brightest fish in the sea. In fact, she was quite dense"
slow to learn or understand; lacking intellectual acuity
- "so dense he never understands anything I say to him"
- "We've got some really dense people in our class"
- "a dense population"
- "The police found the body hidden in the dense undergrowth"
- "There was a moment of dense silence"
permitting little if any light to pass through because of denseness of matter hard to pass through because of dense growth
- "dense vegetation"
- "dense smoke"
- "The dense fog has dissipated this morning"
- "Humidity causes the dense vegetation to flourish in spring and summer"
having high relative density or specific gravity
- "dense as lead"