jǫstr

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Old Norse

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Etymology

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From Proto-Germanic *jestuz. Note that the j- in this word is not etymological, but comes from breaking; in Proto-Norse, j- was always lost word-initially. Thus, the development of the nominative has been *jestuʀ > *estuʀ > *eastuʀ > jǫstr, with U-mutation visible.

Noun

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jǫstr m (genitive jastar, dative isti)

  1. yeast

Declension

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Synonyms

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Descendants

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  • Icelandic: jöstur
  • Norwegian Nynorsk: jester, jest
  • Norwegian Bokmål: jest
  • Old Swedish: iæster

References

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