Where does “impenetrably” come from?

impenetrably (English) comes from English impenetrable, from Middle French impenetrable, from Latin impenetrabilis, from Latin penetrabilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...

impenetrably (English): In an impenetrable manner or state; imperviously

Definitions

  1. In an impenetrable manner or state; imperviously

Ancestry of “impenetrably”, step by step

StepLanguageWordMeaning
1EnglishimpenetrableNot penetrable; Incomprehensible; fathomless;...
2Middle Frenchimpenetrable
3Latinimpenetrabilisimpenetrable; unconquerable, unyielding
4Latinpenetrabilispenetrable; piercing
5Latin-bilis-ble
6Proto-Italic-ðlisForms adjectives from verb stems indicating capacity or worth of being acted on
7Proto-Indo-European-dʰlis
8Proto-Indo-European-dʰlomAlternative form of *-trom; instrumental suffix;...
Every word from Proto-Indo-European -dʰlomEvery word from Latin -bilisEvery word from Latin penetrabilis