1. a substance used to produce fermentation in dough or a liquid • Syn: leavening • Hypernyms: substance • Hyponyms: baking powder, sourdough, yeast, barm 2. an influence that works subtly to lighten or modify something - his sermons benefited from a leavening of humor • Syn: leavening • Hypernyms: imponderable
II - verb
cause to puff up with a leaven - unleavened bread • Syn: raise, prove • Hypernyms: raise, lift, elevate, get up, bring up • Cause: rise, prove • Verb Frames: - Something ----s something - They leaven more bread