Definition of "unremitting"

These thoughts supported my spirits, while I pursued my undertaking with unremitting ardour.

1818, Mary Shelley, chapter 4, in Frankenstein‎, archived from the original on 30 October 2011

We can achieve this god‐likeness only by unremitting and strenuous effort of the intellect.

1961: J. A. Philip. Mimesis in the Sophistês of Plato. In: Proceedings and Transactions of the American Philological Association 92. p. 467.

The human life span will be extended to 200 years, but the last 150 will be spent in unremitting pain and sadness.

2004, George Carlin, “IN THE FUTURE”, in When Will Jesus Bring the Pork Chops?‎, New York: Hyperion Books, page 93

In fact, eighteenth-century British erotica has been the subject of unremitting attention for the last two decades.

2011, Patrick Spedding, James Lambert, “Fanny Hill, Lord Fanny, and the Myth of Metonymy”, in Studies in Philology, volume 108, number 1, page 114

"To meet the ambitions set-out by the Williams-Shapps Plan for Rail, we need to have an unremitting focus upon sustainable delivery, innovation and collaboration. [...]."

2021 July 14, Stefanie Foster, “Network News: Porterbrook takes over Long Marston rail site”, in RAIL, number 935, page 28