Site icon Hip-Hop Website Design and Development

How can I prevent wordpress from creating tag pages?

I use the built in wp tag functionality to group my posts thematically and then I use the WP_query to have the posts displayed according to custom design. I do not need the tag pages created by default in wordpress and I would either like to have them NOT created at all (ideally) or be able to add a noindex meta to the post, as these should not be indexed separately. Is there some way to accomplish this?

EDIT: one additional possibility I have looked at is to exclude all matching urls from the sitemap eg exclude all urls matchine /tag/* . I use the Yoast plugin, but I don’t see any filter which would allow me to do this type of exclusion.