leaven
Pronunciation:
/ˈlɛv.ən//ˈlɛv.ən/noun
Definitions
Any agent used to make dough rise or to have a similar effect on baked goods.
Anything that makes a general assimilating change in the mass.
verb
Definitions
To add a leavening agent.
To cause to rise by fermentation.
To temper an action or decision.
To imbue; to infect; to vitiate.