not limited to just one or a few; open to all

अविकसित

English Usage: The event was unexclusive, inviting guests from all backgrounds.

Hindi Usage: यह कार्यक्रम अविकसित था, सभी पृष्ठभूमियों के मेहमानों को आमंत्रित करते हुए।

the state of being restricted or limited to a particular group

विशिष्टता

English Usage: His club is known for its unexclusive membership policy.

Hindi Usage: उस क्लब को उसकी अनन्य सदस्यता नीति के लिए जाना जाता है।