The antonyms for the word "more nonexclusive" could be exclusive, limited, restricted, particular, specific, unique, or rare. These antonyms suggest that something is not available to everyone or is only accessible to a select few. For example, a limited edition product is more exclusive than a mass-produced one, and a specific item caters to a particular audience's needs or interests. Restricting access to something also adds an element of exclusivity, such as a members-only club, an invitation-only event, or a private restaurant. Thus, antonyms for more nonexclusive can describe varying degrees of exclusivity or specificity in a product, service, or event.