zelo-, zel-; zeal- +
(Greek > Latin: ardor, fervor; zealot; zeal; jealousy, jealous)
Etymologically, jealousy and zeal came from the same source. Both originally came from Greek zelos. This passed into post-classical Latin as zelus, which later produced the adjective zelosus. Old French incorporated this as gelos or jelous and passed it on to English.
The Greek word denoted "jealousy" and "fervor, enthusiasm", and it is this strand of meaning that has come down to us as jealous. Jalousie was the French equivalent of jealousy. Most of the words that became distinctive terms for "jealousy" were originally used in a good sense of "zeal" and "emulation".
zelotism, zealotism
Action, thought, or feeling characteristic of a zealot; zealotry.
zelotypia
1. An insane or excessive jealousy.
2. Excessive zeal in carrying out a project.
3. Excessive zeal, carried to the point of morbidity, in the advocacy of any cause.
4. Etymology: from Greek zelotypia, "rivalry, envy"; from zelos, "zeal", + typto, "to strike".
zelotypist
Someone who is characterized, or marked, by excessive zeal; a zealot.
Related religious-word units:
church;
dei-, div-;
ecclesi-;
fanati-;
hiero-;
idol-;
-olatry;
theo-.
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