Read the dictionary definition of subside. All definitions for this word.
1. wear off or die down
1. The pain subsided
2. descend into or as if into some soft substance or place
1. He sank into bed
2. She subsided into the chair
3. sink down or precipitate
1. the mud subsides when the waters become calm
4. sink to a lower level or form a depression
1. the valleys subside