Etymology

leavener

L1E1A1V4E1N1E1R1

Today it means: Any agent that promotes leavening. Full definition →

English leaven ← Middle English levayn ← Old French levain
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The story

  1. Proto-Indo-European*h₁lengʷʰ-
  2. Proto-Indo-European*h₁léngʰus
  3. Proto-Italic*breɣʷisinflu.
  4. Proto-Italic*leɣʷis
  5. Latinlevis
  6. Latinlevō
  7. Vulgar Latin*levāmen
  8. Old Frenchlevain
  9. Middle Englishlevayn
  10. Englishleaven
  11. English todayleavener

From leaven + -er.

Etymology from Wiktionary, CC BY-SA 4.0.