untold

 
Pronunciation: /ʌnˈtəʊld/

adjective

  • 1 [attributive] too much or too many to be counted or measured: thieves caused untold damage
  • 2(of a story or event) not narrated or recounted: no event, however boring, is left untold

Origin:

Old English unteald 'not counted' (see un-1, told)