Where does “expugner” come from?

expugner (Old French) comes from Latin expugno, from Latin pugnō, from Latin pūgnus, from Proto-Italic pugnos, from Proto-Indo-European puǵnos, from Proto-Indo-European pewǵ- — to punch, fist-fight; to prick, poke, stab.

Ancestry of “expugner”, step by step

StepLanguageWordMeaning
1LatinexpugnoI capture, take by storm, conquer; I storm,...
2Latinpugnōto fight, combat, battle, engage
3Latinpūgnusa fist; a hand with all fingers curled up
4Proto-Italicpugnosfist
5Proto-Indo-Europeanpuǵnos—
6Proto-Indo-Europeanpewǵ-to punch, fist-fight; to prick, poke, stab
Every word from Proto-Indo-European pewǵ- →Every word from Proto-Indo-European puǵnos →Every word from Proto-Italic pugnos →