eis- / Indo-European roots

eis-

In words denoting passion.

Oldest form *h1eis- or possibly *h1eish2-.
1. Suffixed form *eis-ā-. irascible, irate, ire from Latin īra, anger.
2. Suffixed zero-grade form *is-(ə)ro-, powerful, holy. hieratic, hiero-; hierarch, hierarchy, hierodule, hieroglyphic, hierophant from Greek hieros, "filled with the divine" holy.
3.
a. iron from Old English īse(r)n, īren, iron;
b. gisarme, spiegeleisen from Old High German īsarn, īsan, iron. Both a and b from Germanic *īsarno-, "holy metal" (possibly from Celtic).
4. Suffixed o-grade form *ois-tro-, madness. estrus; estrogen, estrone from Greek oistros, gadfly, goad, anything causing madness.
5. Suffixed form *eis-mo. Asmodeus from Avestan aēšma-, anger.

[Pokorny 1. eis- 299.]



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