simmer

To be cooked gently or remain just at or below the boiling point.

To be filled with pent-up emotion.

To be in a state of mild agitation or turmoil.

To develop in a slow or unexcited way: synonym: boil.

To cook (food) gently in a liquid just at or below the boiling point.

To keep (a liquid) near or just below the boiling point.

The state or process of simmering.

To become calm after excitement or anger.

A Scotch form of summer.