Where does “iracundo” come from?

iracundo (Spanish) comes from Latin iracundus, from Latin ira, from Latin eira, from Proto-Italic eisā, from Proto-Indo-European h₁eys- — to propel; to move quickly.

iracundo (Spanish): short-tempered; angry; anger-filled

Definitions

short-tempered; angry; anger-filled

Ancestry of “iracundo”, step by step

Step	Language	Word	Meaning
1	Latin	iracundus	hasty of temper, hot-tempered, irritable,...
2	Latin	ira	ire, anger, wrath
3	Latin	eira	—
4	Proto-Italic	eisā	—
5	Proto-Indo-European	h₁eys-	to propel; to move quickly

Every word from Proto-Indo-European h₁eys- →Every word from Proto-Italic eisā →Every word from Latin eira →