Synonyms for leaven

Noun

1. leaven, leavening, substance, matter

usage: a substance used to produce fermentation in dough or a liquid

2. leaven, leavening, imponderable

usage: an influence that works subtly to lighten or modify something; "his sermons benefited from a leavening of humor"

Verb

1. raise, leaven, prove, raise, lift, elevate, get up, bring up

usage: cause to puff up with a leaven; "unleavened bread"