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was leavening

  • past progressive
    of leaven.
    leaven
    noun
    a substance, as yeast or baking powder, that causes fermentation and expansion of dough or batter.

Example Sentences

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Alexina said the shop, like a little leaven, was leavening the whole neighborhood, and truly it seemed so.

From The Pleasant Street Partnership A Neighborhood Story by Frank T. (Frank Thayer) Merrill

Bruno thought that his little leaven was leavening the whole lump—he was not without ambition—he was flattered by the invitation.

From Little Journeys to the Homes of the Great - Volume 12 Little Journeys to the Homes of Great Scientists by Elbert Hubbard

All this time Rome was leavening the nations who had conquered her.

From Young Folks' History of Rome by Charlotte Mary Yonge