A more thorough explanation:

Definition: A stranger is someone who is not involved in a particular transaction or relationship. This can include someone who is not a party to a contract, not related to someone else, or not liable for someone else's debt.

1. In a business deal, a stranger would be someone who is not one of the parties involved in the transaction. For example, if two companies are negotiating a contract, anyone who is not an employee, agent, tenant, or immediate family member of either company would be considered a stranger.

2. In a legal case, a stranger would be someone who is not in privity with another person. This means they do not have a direct relationship with that person. For example, if a landlord and tenant are in a dispute, a neighbor who is not a party to the lease would be a stranger to the case.

3. In a financial situation, a stranger could be someone who voluntarily pays off another person's debt, even though they are not legally responsible for it. For example, if a friend pays off someone else's credit card debt as a favor, they would be a stranger to the original debt.

These examples illustrate how a stranger is someone who is not directly involved in a particular situation or relationship. They may have some connection to the situation, but they are not a party to it and do not have any legal or financial responsibility for it.