Related Clues:
- Extremely sharp
- Like some populations
- Scarcely bright
- Not very bright, but studies English
- Packed in tight
- Having a high specific gravity
- Overgrown, as a rain forest
- Like Archie's pal Moose
- Emotional models in teens
- Obtuse — impenetrable
- Wall against which game is played - two sides needed
- Extreme living at 29, in a manner of speaking
- Concentrated, serious
- Crowded together, which is stupid
- Solid, thick