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unremitting

/ˌʌnɹɪˈmɪtɪŋ/ adjective

In Latin: assiduus First recorded: 1728 Wiktionary

Origin

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.

From Wiktionary, via Kaikki.org (CC BY-SA)