The Oxford Thesaurus An A-Z Dictionary of Synonyms - untoldadj.

1) countless, uncounted, uncountable, unnumbered, numberless, innumerable, myriad, incalculable; immeasurable, measureless, unlimited: Untold millions are lost through tax fraud each year. 2) unrecounted, unnarrated, undescribed, unpublished, unrevealed, undisclosed, undivulged, unreported, private, hidden, secret: How many untold stories are there in the naked city? 3 inexpressible, unutterable, indescribable, unimaginable, inconceivable, unthinkable, unspeakable: The untold agony that man went through because of his family's illnesses!