simmer - To heat a liquid, usually a stew or soup, just below the boiling point, allowing it to cook slowly; or to stay in a slow, controlled state of progress or tension, often before a larger event or change occurs.
He was simmering with anger, but he kept it inside and didn't say out loud what he was thinking and feeling.
nourish - To provide food or other substances necessary for growth, health, and good condition; also to support or promote the development of something (like ideas, feelings, or relationships).
She worked hard to nourish her creativity by painting every day.
