To pass away without effect; to cease, or be dissipated
To become calm.
1. To feel less enamoured of something or somebody.
2. When the temperature of a thing or place becomes lower, it cools off.
3. When you become less angry or less excited, you cool off.
When people settle down, they start to live a less active life and perhaps get married, buy a house, and start a family.
1. To become calm or peaceful
2. To become reduced by or as if by simmering
1. To draw gradually toward an end
2. Relax, unwind
3. To cause a gradual lessening of usually with the intention of bringing to an end