Where does “merciness” come from?

merciness (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.

merciness (English): The state, quality, or condition of being...

Definitions

  1. The state, quality, or condition of being...

Ancestry of “merciness”, step by step

merciness traces back through two separate lines of ancestry.

via English mercy

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

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European pleh₁-Every word from Proto-Indo-European pl̥h₁nósEvery word from Proto-Germanic fullaz
merciness — Etymology, Origin & Word History | Etymology Explorer