If a phrase adheres to a certain rule, then I call it a Felt Word™.
Use the examples below to find the rule.
In case you want it in CSV:
Felt Words™, Non Felt Words™ zit, boil vex, bother baby, grandparent saw, axe wild, zoo ordinary, uncanny violet, blue urchin, waif clue, hint
The puzzle relies on the series' inbuilt assumption, that each word can be tested for whether it is a Felt Word™ or not on its own.
Let's just say Felt Words™ offer their readers a complete experience.