verb (used with object)
Origin of leaven
Examples from the Web for leaven
“So you give the right information” but leaven it with laughs.
The leaven of hypocrisy marred petitions in which the heart had no share.The Haunted Room|A. L. O. E.
Many other substances contain fermenting qualities, and are, therefore, sometimes used as substitutes for yeast and leaven.Popular Technology, Vol. I (of 2)|Edward Hazen
The leaven of sin that touched humanity at the first has infected the whole.The Parables of Our Lord|William Arnot