Unfortunately, appropriate and inappropriate are subjective categories, and as such, they won't help you start a conversation about the requirements. I would go with does this requirement - I'd ditch the high level as well - help my customers achieve their goals? If the answer is yes, you have a requirement, if no, you don't have.
For example, the requirement is to have a button for cancel on a web page. If you ask "how this button helps our customers to cancel our subscription?", you may conclude after a series of user interviews and A/B tests that they don't need a button, they are fine with a link. The first requirement was inappropriate using your terms, and the second was appropriate, and you figured out what to develop.