In terms of access or availability:
* Inclusive: This is the most common opposite, meaning something is open to everyone.
* Open: Similar to inclusive, suggesting something is readily accessible.
* Public: Denoting something is available to the general public.
* Common: Meaning something is widely available or shared.
In terms of relationship or association:
* Unattached: Meaning not committed or bound to a specific person or group.
* Independent: Suggesting freedom from exclusivity or control.
* General: Broad and inclusive, not specific or restricted.
In terms of quality or characteristics:
* Ordinary: Not exceptional or special.
* Typical: Common or standard.
* Basic: Simple and not elaborate.
Other possibilities:
* Shared: Indicating something is available to multiple people.
* Joint: Implying participation or ownership by multiple parties.
The best opposite for "exclusive" will depend on the specific situation and the intended meaning.