1. (noun) a substance used to produce fermentation in dough or a liquid

• leavening

2. (noun) an influence that works subtly to lighten or modify something

• leavening

3. (verb) cause to puff up with a leaven

• prove
• raise

1. (noun) a substance used to produce fermentation in dough or a liquid

• baking powder
• barm
• yeast
• sourdough

1. (noun) a substance used to produce fermentation in dough or a liquid

• substance

2. (noun) an influence that works subtly to lighten or modify something

• imponderable

3. (verb) cause to puff up with a leaven

• bring up
• elevate
• get up
• lift
• raise

1. (noun) a substance used to produce fermentation in dough or a liquid

• prove
• raise

2. (verb) cause to puff up with a leaven

• leavening