Related Clues:
- Hard to get through
- Thick, like fog
- Thick wooded valley around the point
- Several rooms with one key? Stupid!
- Not very bright — needs to be properly organised
- Dim woman lacks ego
- Needs to be close
- Compressed - obtuse
- Tightly packed - stupid
- Close - compact - stupid
- Close together
- Needs (anag)
- Not so swift on the uptake
- Not getting it
- Like dunderheads