Where does “ronĝi” come from?

ronĝi (Esperanto) comes from French ronger, from Old French rongier, from Old French rungier, from Latin rūmigāre.

ronĝi (Esperanto): to gnaw

Definitions

Step	Language	Word	Meaning
1	French	ronger	to gnaw; to erode, to eat at
2	Old French	rongier	—
3	Old French	rungier	—
4	Latin	rūmigāre	—

ronĝi — Etymology, Origin & Word History | Etymology Explorer