Where does “unpotable” come from?

unpotable (English) comes from English potable, from Middle English potable, from Old French potable, from Latin pōtābilis, from Latin pōtō, from Latin pōtus, from Latin pōtāre, from Proto-Italic pōtos — to drink.

unpotable (English): not potable

Definitions

  1. not potable

Ancestry of “unpotable”, step by step

unpotable traces back through two separate lines of ancestry.

via English potable

StepLanguageWordMeaning
1EnglishpotableGood for drinking without fear of disease or...
2Middle EnglishpotableSuitable for drinking; potable
3Old Frenchpotablepotable
4Latinpōtābilisdrinkable, potable
5Latinpōtōto drink
6Latinpōtusdrunk
7Latinpōtāre
8Proto-Italicpōtosdrunk
9Proto-Indo-Europeanph₃tósdrunk; having drunk
10Proto-Indo-Europeanpeh₃-to drink

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European peh₃-Every word from Proto-Indo-European ph₃tósEvery word from Proto-Italic pōtos