Results

Definition of immemorial : Extending beyond the reach of memory, record, or tradition; indefinitely ancient; as, existing from time immemorial.

Synonyms:

patriarchal, already, venerable, aged, hoary, primeval, decrepit, time-honored, olden, old, before, senile, one day, at one time, antiquated, traditional, remote, ago, ancient, high, previously, once, new, time-worn, elderly, antique, gray, past

incalculable, unlimited, limitless, infinite, termless, eternal, bottomless, innumerable, everlasting, boundless, interminable, countless, illimitable, ceaseless, perpetual, timeless, unbounded, endless, numberless, inexhaustible, immeasurable

Usage examples:

• They had been there from time immemorial, as long or longer, if anything, than the owners of the plantations about them; and insignificant as they were, they were not the kind to attempt to question, even had anyone been inclined to do so, which no one was. - "The Burial of the Guns", Thomas Nelson Page.
• From time immemorial this has been called the Kaka Scala, or bad way. - "Incidents of Travel in Greece, Turkey, Russia, and Poland, Vol. I (of 2)", John Lloyd Stephens.
• Thence it was transmitted to Greece, thence to Italy, and ultimately it was distributed throughout Europe, in almost every part of which it has, from time immemorial, been cultivated. - "The Book of Household Management", Mrs. Isabella Beeton.