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   The American Heritage® Dictionary of the English Language: Fourth Edition.  2000.
 

Appendix I

Indo-European Roots
 
ENTRY:gwei-
DEFINITION:To live. Also gwei- (oldest form *gwei3-, with metathesized variant *gwye3-, colored to *gwyo3-, contracted to *gwy-).
Derivatives include quick, vivid, vitamin, whiskey, amphibious, microbe, and hygiene.
   I. Suffixed zero-grade form *gwi-wo-, *gw-wo- (< *gwi-wo-), living. 1a. quick, quicksilver, from Old English cwic, cwicu, living, alive; b. couch grass, quitch grass, from Old English cwice, couch grass (so named from its rapid growth). Both a and b from Germanic *kwi(k)waz. 2a. (i) vivify, viviparous, from Latin vvus, living, alive; (ii) viper, weever, wyvern, from Latin vpera, viper, contracted from *vvipera, “bearing live young” (from the belief that it hatches its eggs inside its body), from feminine of earlier *vvo-paros (-paros, bearing; see per-1); b. viand, victual, viva, vivacious, vivid; convivial, revive, survive, from Latin denominative vvere, to live. 3. azoth, from Middle Persian *zhwak, alive, from Old Persian *jvaka-, extension of jva-. 4. Further suffixed form *gw-wo-t-. viable, vital; vitamin, from Latin vta, life. 5. Further suffixed form *gwi-wo-tt-. usquebaugh, whiskey, from Old Irish bethu, life.
   II. Suffixed zero-grade form *gwi-o-. bio-, biota, biotic; aerobe, amphibian, anabiosis, cenobite, dendrobium, microbe, rhizobium, saprobe, symbiosis, from Greek bios, life (> biot, way of life).
   III. Variant form *gwy- (< *gwyo-). 1. azo-; diazo, hylozoism, from Greek zo, life. 2. Suffixed form *gwy-yo-. zodiac, –zoic, zoo-, zoon1, –zoon, from Greek zon, zion, living being, animal.
   IV. Compound suffixed form *yu-gwi-es- (see aiw-).
   V. Possibly Old English cwifer-, nimble: quiver1. (Pokorny 3. ge- 467.)
 
 
The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.

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