Where does “unpierceable” come from?

unpierceable (English) comes from English pierceable, from English pierce, from Middle English perce, from Old French percier, from Latin pertusiāre, from Latin pertūsus, from Latin pertundere, from Latin pertundo — to praise, laud.

unpierceable (English): That cannot be pierced

Definitions

  1. That cannot be pierced

Ancestry of “unpierceable”, step by step

unpierceable traces back through two separate lines of ancestry.

via English pierceable

StepLanguageWordMeaning
1EnglishpierceableCapable of being pierced; penetrable
2Englishpierceto puncture; to break through; to create a hole...
3Middle Englishpercepierce
4Old Frenchpercierto pierce
5Latinpertusiāre
6Latinpertūsusperforated
7Latinpertunderesecond-person singular future passive indicative...
8LatinpertundoI bore through, perforate
9LatintundoI beat, strike, buffet; I pound, bruise, crush,...
10Proto-Italictundōbeat, strike
11Proto-Indo-European(s)tewd-to push, to hit
12Proto-Indo-Europeanstew-to praise, laud

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European stew-
unpierceable — Etymology, Origin & Word History | Etymology Explorer