Related Clues:
- More impenetrable
- More thick-skulled
- More tightly packed hole in middle of self-service
- More opaque
- Worse, as fog
- More packed
- Slower on the uptake
- More heavily populated
- Less intelligent trick he played
- Not as perceptive
- Tougher to cut a path through
- Comparatively crowded
- Comparatively compressed
- More dense
- Like pound cake, vis-a-vis sponge cake