Related Clues:
- Queer birdie, say - like 6?
- Forbidden expressions of gratitude and disapproval
- Rising cricketer gets pair? Not to be mentioned
- Unlawful 21 executed by getting rid of senator from an African state
- Both appreciation and disapprobation are forbidden
- Prohibited practice
- Not allowed cheers? I don't like that!
- Contrary to law
- (Something) forbidden
- Not lawful
- (Irrational) prohibition
- "The Sweetest ___" (Sade hit)
- Out of practice Customs won't allow it
- It's just not done
- Forbidden by social custom