Webster's Revised Unabridged Dictionary · 1913

Subside

Subside , intransitive verb

[Latin subsidere; sub under, below + sidere to sit down, to settle; akin to sedere to sit, English sit. See Sit.]

1.
To sink or fall to the bottom; to settle, as lees.
2.
To tend downward; to become lower; to descend; to sink.
Heaven's subsiding hill. — Dryden
3.
To fall into a state of quiet; to cease to rage; to be calmed; to settle down; to become tranquil; to abate; as, the sea subsides; the tumults of war will subside; the fever has subsided.
In cases of danger, pride and envy naturally subside. — C. Middleton