for the ages

Adjective

 * 1)  Especially memorable and noteworthy; deserving to endure for a very long time.

Usage notes

 * Now often used in the expression.

Adverb

 * 1)  In a manner that produces long-lasting effects; for posterity; for a very long duration.
 * 2) * 1947 Feb. 28, "Quality Endures" (advertisement), Ellensburg Daily Record, p. 3 (retrieved 12 Sept 2013) :
 * Some men build hastily and quickly so that their work serves only its transient purpose, and is soon forgotten. Others build for the ages.
 * Some men build hastily and quickly so that their work serves only its transient purpose, and is soon forgotten. Others build for the ages.