subside

sub·side

vi \səb-ˈsīd\

sub·sid·edsub·sid·ing

Definition of SUBSIDE

: to lessen in severity : become diminished <the fever subsided>

—sub·si·dence \səb-ˈsīd-^ən(t)s, ˈsəb-səd-ən(t)s\ noun