Related Clues:
- Like a fifth wheel
- A waste of time
- Serving no purpose
- Environmental slogan, or a hint to this puzzle's theme answers
- 'The ___ Precaution' (alternate title of 'The Barber of Seville')
- Of no practical application
- Of no practical application or worth
- Without any worthwhile application
- Having no beneficial function
- Having no benefical function
- Having no purpose
- Is Sue less impractical?
- Having no function
- Not practical or constructive
- Of no worthwhile application