Related Clues:
- Compiling lapse — a bit of a bloomer
- Prohibited practice
- Modern composer's rules of grammar: double negatives are a ___ ?
- Part of flower
- Part of a flower's outer envelope
- Impossibility
- Part of a flowering plant
- Part of flower's calyx
- Something totally unacceptable (informal)
- Wrong numbers
- Possibility that's not an option
- Something that must not be done
- Second helping, to a dieter
- 'What were you thinking?!'
- Petal neighbor