subside

verb

1. (intransitive)To sink or fall to the bottom; to settle, as lees.
2. (intransitive)To fall downward; to become lower; to descend; to sink.

   “An illuminating article in a recent issue of the Eastern Region's Civil Engineering News points out that where coal is worked over a reasonably large area, it is not only the whole of the strata above the workings, but also an area beyond which is liable to subside at varying rates after the coal has been removed.”

3. (intransitive)To fall into a state of calm; to be calm again; to settle down; to become tranquil.

   “The sea subsides.”

   “The tumults of war will subside.”

   “The fever has subsided.”

   “Long after his cigar burnt bitter, he sat with eyes fixed on the blaze. When the flames at last began to flicker and subside, his lids fluttered, then drooped ; but he had lost all reckoning of time when he opened them again to find Miss Erroll in furs and ball-gown kneeling on the hearth and heaping kindling on the coals,[…].”

   “I've been meaning to tell you / I've got this feelin' that won't subside / I look at you and I fantasize”

4. (colloquial, intransitive)To cease talking.