Where does “rage” come from?

rage (German) comes from French rage, from Middle French rage, from Old French rage, from Latin rabia, from Latin rabiēs, from Latin rabiō, from Proto-Indo-European rebʰ-, from Proto-Indo-European lebʰ- — youngling, nestling, child; to work, harvest,...

rage (German): inflection of ragen: ## first-person singular...