Where does “nonpenetrable” come from?

nonpenetrable (English) comes from English penetrable, from Middle English penetrable, from Old French penetrable, from Medieval Latin penetrabilis, from Latin penetro, from Latin penes, from Proto-Italic penets, from Proto-Indo-European pen-et-s — bog, mire; moist; wet; mud; swamp; water; mire,...

nonpenetrable (English): Not penetrable

Definitions

  1. Not penetrable

Ancestry of “nonpenetrable”, step by step

nonpenetrable traces back through two separate lines of ancestry.

via English penetrable

StepLanguageWordMeaning
1EnglishpenetrableCapable of being penetrated, entered, or pierced....
2Middle Englishpenetrable
3Old Frenchpenetrable
4Medieval Latinpenetrabilispenetrable; piercing
5LatinpenetroI enter; I penetrate
6LatinpenesUnder one's government or command; In one's...
7Proto-Italicpenets
8Proto-Indo-Europeanpen-et-sfood
9Proto-Indo-Europeanpen-bog, mire; moist; wet; mud; swamp; water; mire,...

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European pen-Every word from Proto-Indo-European pen-et-sEvery word from Proto-Italic penets