Entry 1 sense Webster, 1913 Unrelenting /ŭnˌ-rēl-ĕn'-tĭng/ · Un·re·lent·ing · IPA /ˌʌnriːlˈɛntɪŋ/ 01 a. Not relenting; unyielding; rigid; hard; stern; cruel. 1. Not relenting; unyielding; rigid; hard; stern; cruel.