Neither is familiar to me. What is the context?Would I write "a never-fail plan" or a "never-fails plan"?
Please do not keep re-posting your question. Have some patience.my original post was inspired by a sports article about golf. The first paragraph runs like:
"If you're like me, your tee shots have a tendency to shoot into the woods faster than a scalded dog. Fear not, friends, there's a cure for all of us, as the New York Times tells us: a new, only-flies-straight golf ball! There's just one small catch ..."
In the first paragraph, the phrase "a new, only-flies-straight golf ball" was used. Why is the plain form of "fly" not used in the modifier position?