1550s, from Latin immemorabilis, from assimilated form of in- "not" (see in- (1)) + memorabilis (see memorable).

Online Etymology Dictionary, © 2010 Douglas Harper

Examples from the Web for immemorable

Historical Examples of immemorable

  • A dreary fate had awaited an ancient, and, in its time, even not immemorable home.


    Benjamin Disraeli

  • So far, therefore, as the house of Armine was concerned, time flew during the next century with immemorable wing.

    Henrietta Temple

    Benjamin Disraeli

  • Swept long ago into the limbo of dear immemorable dissolute things.

    The Belovd Vagabond

    William J. Locke

  • From a period of immemorable antiquity it had been the practice of every English government to contract debts.

  • This was a scene not reserved for me, yet my first visit to Shoubra closed with an incident not immemorable.


    Benjamin Disraeli