Where does “unrelentlessness” come from?

unrelentlessness (English) comes from English unrelentless, from English relentless, from English relent, from Middle English relenten, from Anglo-Norman relentir, from Latin rĕ-, from Latin prōdūcō, from Latin prō- — passed , crossed.

unrelentlessness (English): The state or condition of being unrelentless ("relentless"); relentlessness, unrelentingness

Definitions

  1. The state or condition of being unrelentless ("relentless"); relentlessness, unrelentingness

Ancestry of “unrelentlessness”, step by step

StepLanguageWordMeaning
1EnglishunrelentlessWithout respite or let up; unrelenting; relentless
2EnglishrelentlessUnrelenting or unyielding in severity;...
3EnglishrelentStay; stop; delay; A relenting; To become less...
4Middle EnglishrelentenTo become more fluidous or dissolved; to melt; To...
5Anglo-Normanrelentirto relent
6Latinrĕ-back, backwards
7Latinprōdūcōto lead or bring forth, forward or out
8Latinprō-forward direction, forward movement
9Proto-Italic*pro-pro- see the Latin entry for further meanings
10Proto-Indo-Europeanpro-toward, forward
11Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
12Proto-Indo-Europeanper-before, in front; first; to go through
13Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós
unrelentlessness — Etymology, Origin & Word History | Etymology Explorer