to become less forceful or intense; to abate
The storm subsided
said of ground: to cave in; to collapse
to sink so as to form a depression
to fall to a lower level or return to a normal level
The floods subsided
to sink or fall to the bottom; to settle
informal to collapse into a sitting or lying position, usu through exhaustion
He subsided into a chair
[Latin subsidere, from sub- + sidere to sit down, sink]