Untold is a related term of limitless.
As adjectives the difference between untold and limitless
is that untold is not told; not related; not revealed while limitless is without limits in extent, size, quantity, and/or comprehensive perception; boundless.
untold
English
Adjective
(-)
Not told; not related; not revealed.
Not numbered or counted.
*
limitless
English
Adjective
(
en adjective)
Without limits in extent, size, quantity, and/or comprehensive perception; boundless