Which of the following 5 should have a hyphen, please?
1.) arch shaped 2.) well swept 3.) cared for 4.) light coloured 5.) little used
John saw the arch shaped structure.
It would be easy to read that John saw the arch. That leaves "shaped structure" hanging. So we use a hyphen.
John saw the arch-shaped structure.
Do you understand?
Pope of the Dictionary.com Forum