Unsecured (adjective)

1. Not fixed or fastened in place; not secured.
2. Not guaranteed by collateral.

Origin:

From the prefix "un-" meaning not, and "secured" meaning fixed or fastened in place.

Examples:

1. An unsecured loan is one that is not backed by collateral.
2. The company's financial situation was precarious because it had taken on a large amount of unsecured debt.
3. Please make sure that the windows are closed and locked before you leave the house, we don't want to leave the house unsecured.
4. The safe was found open and unsecured, the thief must have been able to open it easily.
5. The loose rocks on the trail made it unsecured and difficult to hike on.