Related Clues:
- Rather thick
- Not the sharpest tool in the shed
- Slow-witted when it comes to geometry?
- A 3dn between 90 and 180 degrees
- Like a regular pentagon's angles
- Dim pupil once taking time with exercise
- Dull books about British milk
- Not an intelligent sort of angle?
- Love, dropping its first subtle shimmering
- Stupid sort of angle
- An angle between 90 and 180 degrees
- Stupid baronet plunged into river
- Not at all alert
- Combat guns get mislaid regularly -- that's stupid
- Stupid honour essentially elitist American wears