leaven
/ˈlɛv.ən/ noun, verb
Forms leavens leavening leavened leven
- noun Any agent used to make dough rise or to have a similar effect on baked goods.
- noun (figurative) Anything that induces change, especially a corrupting or vitiating change.
- noun (Judaism) Chametz.
- verb (transitive) To add a leavening agent. “Yeast is used to leaven bread, making it rise during baking.”
- verb (transitive) To cause to rise by fermentation.
- verb (transitive, figuratively) To temper an action, decision, attitude, characteristic, etc.
- verb (transitive, figuratively) To imbue; to infect; to vitiate. “The comedian's jokes helped leaven the atmosphere during the serious meeting.”
- verb To rise or become larger; to prove.
Synonyms
Etymology
From Middle English levayn, borrowed from Old French levain, from Vulgar Latin *levāmen, a noun based on Latin levō (“raise”).
Webster’s 1913
- noun Any substance that produces, or is designed to produce, fermentation, as in dough or liquids; esp., a portion of fermenting dough, which, mixed with a larger quantity of dough, produces a general change in the mass, and renders it light; yeast; barm.
- noun Anything which makes a general assimilating (especially a corrupting) change in the mass.
- verb To make light by the action of leaven; to cause to ferment.
- verb To imbue; to infect; to vitiate.
Etymology [OE. levain, levein, F. levain, L. levamen alleviation, mitigation; but taken in the sense of, a raising, that which raises, fr. levare to raise. See Lever, n.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “leaven”, CC BY-SA 4.0. Details