untold

adjective3

1. •
   Not told; not related; not revealed; secret.

   • As Royal Engineers General Mungo Melvin, who has been helping with the draft, put it: "This is the last untold story of the Normandy Invasion." — 2023
2. •
   Not numbered or counted.

   • Huge swaths of Port-au-Prince lay in ruins, and thousands of people were feared dead in the rubble. — 2010
3. •
   Not able to be counted, measured, told, expressed in words, or described; extremely large in scale, number, quantity, suffering, damage, etc.; uncountable, unmeasurable, immeasurable, indescribable, inexpressible.

   • Trains are kept on the move in circumstances when, for example, a fifteen-minute hold-up to carry out a repair task at one attempt would cause untold upset to a service running at close intervals. — 1960