Where does “unmercurial” come from?

unmercurial (English) comes from English Mercurial, from Middle English mercurial, from Latin Mercurialis, from Latin Mercurius, from Latin merx, from Proto-Italic *merks.

unmercurial (English): Not mercurial

Definitions

  1. Not mercurial

Ancestry of “unmercurial”, step by step

unmercurial traces back through two separate lines of ancestry.

via English Mercurial

StepLanguageWordMeaning
1EnglishMercurialAny of the plants known as mercury, especially the annual mercury or French mercury (Mercurialis annua)
2Middle EnglishmercurialA plant belonging to the genus "Chenopodium"; a...
3LatinMercurialispertaining to the Roman god Mercury
4LatinMercuriusMercury; a Roman god associated with speed and...
5Latinmerxmerchandise, commodity; goods, wares
6Proto-Italic*merks

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Italic *merksEvery word from Latin merxEvery word from Latin Mercurius