settle down

(verb) settle into a position, usually on a surface or ground. Synonyms: settle, settle down. Example: "Dust settled on the roofs."

(verb) become settled or established and stable in one's residence or life style. Synonyms: settle, root, take root, steady down, settle down. Example: "He finally settled down."

(verb) become quiet or calm, especially after a state of agitation. Synonyms: calm, calm down, cool off, chill out, simmer down, settle down, cool it. Examples: "After the fight both men need to cool off.." "It took a while after the baby was born for things to settle down again.."