leaven

“So you give the right information” but leaven it with laughs.

Then they began to talk among themselves: what had they done to be thus bidden to beware of the leaven of the Pharisees?

On these few occasions indeed it would even appear to be tinctured with some slight leaven of good-nature.

In a word, superstition is a dangerous leaven, that is fitted to corrupt even the most honest hearts.

The knowledge that before long he would take unto himself a wife was a leaven that leavened every thought and every act.

Even Canada, with its leaven of Orangemen, was to be honoured with the speeches of an orator of second-rate powers.