untold
adjective uk/ʌnˈtəʊld/ /ˈʌn.təʊld/ us/ʌnˈtoʊld/
（数量或水平）难以形容的；无数的；不可计量的；巨大的
so great in amount or level that it can not be measured or expressed in words
untold riches 巨额财富
Words alone cannot convey the untold misery endured by people in these refugee camps. 单单文字是无法形容人们在难民营里所遭受的极度苦难。