unremitting

adj

Etymology: un- + remitting, from remit (in now rare sense of “diminish, abate”), from Middle English remitten, from Latin remittere (“to send, send back”). Compare Old French remettre, remetre, remitter. Not from nonexistent unremit. First attested in 1728.

1. Incessant; never slackening.

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

   “1961: J. A. Philip. Mimesis in the Sophistês of Plato. In: Proceedings and Transactions of the American Philological Association 92. p. 467. We can achieve this god‐likeness only by unremitting and strenuous effort of the intellect.”