Related Clues:
- __ rock
- It turns litmus red
- Caustic and biting
- Sarcastic or sour
- Substance which turns litmus red
- It's corrosive
- Caustic liquid of many kinds
- Bitter or sour
- Like some terrible reviews
- It is neutralised by alkali
- How a branch of the police, I see, gets biting
- It makes Father sour to come back around in a 8 down sort of way, in short
- 21 across makes such a detective matter quite poisonous
- A matter for the detectives, I see, but not for 31 across
- Not a sweet detective matter