Reconstruction:Proto-West Germanic/jestu

This Proto-West Germanic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.

Proto-West Germanic

Etymology

From Proto-Germanic *jestuz. Equivalent to *jesan (“to ferment”) +‎ *-þu.

Noun

*jestu m

1. fermentation
2. byproducts or agents of fermentation
3. yeast

   Synonyms: *bermō, *habbjō

Inflection

u-stem
	Singular
Nominative	*jestu
Genitive	*jestō
	Singular	Plural
Nominative	*jestu	*jistiwi, *jestō
Accusative	*jestu	*jestū
Genitive	*jestō	*jistiwō
Dative	*jistiwi, *jestō	*jestum
Instrumental	*jestu	*jestum

Descendants

• Old English: ġiest, ġist, ġyst
  • Middle English: yeest
    • Scots: yest
    • English: yeast
• Old Frisian: *gest, *jest
  • Saterland Frisian: Gääst, Jääst
  • West Frisian: gêst, gist
• Old Saxon: *gest
  • Middle Low German: gest
    • German Low German: Geste, Gest, Gist
      • → German: Gest (northern Germany)
• Old Dutch: *gest, *gist
  • Middle Dutch: gest, gist
    • Dutch: gist
      • Afrikaans: gis
• Old High German: *jest, *gest
  • Middle High German: jest, gest
    • Alemannic German: Jëst
    • German: Gischt, Jast, Jäst