The Collaborative International Dictionary
Indiscoverable
Indiscoverable \In`dis*cov"er*a*ble\, a.
Not discoverable; undiscoverable.
--J. Conybeare.
Wiktionary
indiscoverable
a. unable to be discovered, undiscoverable, not discoverable.
Usage examples of "indiscoverable".
The stars changed above them, and under the alien-figured Signs they heard the wild, melancholy crying of swans that flew southward fleeing the winter of realms indiscoverable, and seeking the summer in trackless worlds.