sub·side 
/səbˈsaɪd/ verb
sub·sides; sub·sid·ed; sub·sid·ing /səbˈsaɪd/ verb [no obj] 1 : to become less strong or intense
▪ The pain/swelling will subside in a couple of hours. ▪ After his anger had subsided, he was able to look at things rationally. ▪ We'll have to wait until the wind/storm/rain subsides. 2 : to move down to a lower level
▪ The road will remain closed until the water/flood/river subsides. ▪ a place where the ground has subsided [=sunk, settled]
▪ The pain/swelling will subside in a couple of hours. ▪ After his anger had subsided, he was able to look at things rationally. ▪ We'll have to wait until the wind/storm/rain subsides.
▪ The road will remain closed until the water/flood/river subsides. ▪ a place where the ground has subsided [=sunk, settled]
