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

fermentation
byproducts or agents of fermentation
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
  - Limburgish: ges
Old High German: *jest, *gest
- Middle High German: jest, gest
  - Alemannic German: Jëst
  - German: Gischt, Jast, Jäst