unending

un- +‎ ending

unending (comparative more unending, superlative most unending)

1. Not ending; having no end; eternal.
   • 1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC:

     At any rate I was very sure that I would not attempt to attain unending life.

   • 1930, John Donald Wade, The Life and Death of Cousin Lucius; republished as Donald Davidson, editor, Selected Essays and Other Writings of John Donald Wade, 1966, page 26:

     As he looked back and thought of the recurrent seasons falling upon the world it seemed to him that they had come to the count, over and over, of Hard Times, Hard Times, Hard Times, more monotonous, more unending, than the count of the soldiers, muttering as they marched, years before, in the town which had before been called only the crossroads.

• (having no end): termless; see also Thesaurus:endless

• end
• ending
• unendingly
• unendingness

• “unending”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.