Where does “куленепробивний” come from?

куленепробивний (Ukrainian) comes from Ukrainian непробивни́й, from Ukrainian не-, from Ukrainian з-, from Ukrainian леті́ти, from Old East Slavic летѣти, from Proto-Slavic letěti, from Proto-Indo-European lēk- — string, twig, tendril; leg, the main muscle of...

куленепробивний (Ukrainian): bulletproof

Definitions

  1. bulletproof

Ancestry of “куленепробивний”, step by step

куленепробивний traces back through two separate lines of ancestry.

via Ukrainian непробивни́й

StepLanguageWordMeaning
1Ukrainianнепробивни́йimpenetrable, unpierceable
2Ukrainianне-not; un-
3Ukrainianз-attached to imperfective verbs to form the perfective aspect
4Ukrainianлеті́тиto fly
5Old East Slavicлетѣти
6Proto-Slavicletětito fly
7Proto-Indo-Europeanlēk-string, twig, tendril; leg, the main muscle of...

via Ukrainian ку́ля

StepLanguageWordMeaning
1Ukrainianку́ляball, sphere
2Polishkulaball; bullet; crutch
3Middle High Germankūle
Every word from Proto-Indo-European lēk-Every word from Ukrainian не-Every word from Proto-Slavic letěti