Where does “unmercy” come from?

unmercy (English) comes from English mercy, from Middle English mercy, from Middle English -ful, from Old English -ful, from Proto-Germanic -fullaz, from Proto-Germanic fullaz, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

unmercy (English): The lack or absence of mercy; mercilessness

Definitions

  1. The lack or absence of mercy; mercilessness

Ancestry of “unmercy”, step by step

StepLanguageWordMeaning
1EnglishmercyRelenting; forbearance to cause or allow harm to...
2Middle EnglishmercyAlternative form of mercien
3Middle English-fulAppended to nouns to form adjectives denoting...
4Old English-fulfull of; -ful
5Proto-Germanic-fullaz-ful
6Proto-Germanicfullazfull; the whole, the entire
7Proto-Indo-Europeanpl̥h₁nósfull
8Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European pleh₁-Every word from Proto-Indo-European pl̥h₁nósEvery word from Proto-Germanic fullaz