from The Century Dictionary.
- Not made sure; not securely established.
from the GNU version of the Collaborative International Dictionary of English.
- adjective obsolete Not made sure.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective obsolete Not made
Sorry, no etymologies found.
Meantime, you know about a lot of American banks that been closing and perhaps you're worried about your money, whether it's unsured.