Related Clues:
- Overshadow or eclipse
- Dull or impenetrable
- Mysterious to all but a chosen few
- Dull, opaque
- Intelligible only to informed people in coteries
- Abstruse, arcane
- Intelligible only with special knowledge
- So Bruce may be dim
- Unknown or unclear
- Difficult to find
- 'Abstruse, arcane (8)'
- Understood by only a few people
- It's a mystery how Eric can have got his toes broken
- For the initiated, it's broken toes the boy has
- Is 'e that secret drinker, Eric?