dyeu-

To shine (and in many derivatives, “sky, heaven, god”). Zero-grades *dyu- and *diw-.

Derivatives include Tuesday, divine, jovial, Jupiter, diary, dismal, journey, and psychedelic.

I. Basic form *dyeu-, Jove, the name of the god of the bright sky, head of the Indo-European pantheon.

1. Jove, jovial; Sangiovese, from Latin Iovis, Jupiter, or Iov-, stem of Iuppiter, Jupiter.

2. July, from Latin Iūlius, “descended from Jupiter” (name of a Roman gens), from derivative *iou-il-.

3. Vocative compound *dyeu-pəter, “O father Jove” (*pəter-, father; see pəter-). Jupiter, from Latin Iuppiter, Iūpiter, head of the Roman pantheon.

4. Dione, Zeus; dianthus, Dioscuri, from Greek Zeus (genitive Dios), Zeus.

II. Noun *deiwos, god, formed by e-insertion to the zero-grade *diw- and suffixation of (accented) -o-.

1.

a. Tiu, Tuesday, from Old English Tīw (genitive Tīwes), god of war and sky;

b. Tyr, from Old Norse Tȳr, sky god. Both a and b from Germanic *Tīwaz.

2. deism, deity, Deus, joss; adieu, deific, from Latin deus, god.

3. diva, divine, from Latin dīvus, divine, god.

4. Dis, Dives, from Latin dīves, rich (< “fortunate, blessed, divine”).

5. Suffixed zero-grade form *diw-yo-, heavenly. Diana, from Latin Diāna, moon goddess.

6. Devi; deodar, Devanagari, from Sanskrit devaḥ, god, and deva-, divine.

7. Asmodeus, from Avestan daēva-, spirit, demon.

III. Variant *dyē- (< *dyeə-). dial, diary, diet², dismal, diurnal, journal, journey; adjourn, circadian, meridian, postmeridian, quotidian, sojourn, from Latin diēs, day.

IV. Variant *deiə-. psychedelic, woolly adelgid, from Greek dēlos (< *deyalos), clear.

 

[Pokorny 1. dei- 183.]

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