subside

/səb-ˈsīd/

Latin subsidere, from sub- + sidere to sit down, sink; akin to Latin sedēre to sit

verb

  1. to sink or fall to the bottom : settle

  2. to tend downward : descend; especially : to flatten out so as to form a depression

  3. to let oneself settle down : sink

abate subside wane ebb mean to die down in force or intensity. abate stresses the idea of progressive diminishing. subside implies the ceasing of turbulence or agitation.