[v] become settled or established and stable in one's residence or life style; "He finally settled down"
[v] become quiet or calm, esp. after a state of agitation; "After the fight both men need to cool off."; "It took a while after the baby was born for things to settle down again."
[v] settle into a position, usually on a surface or ground; "dust settled on the roofs"
calm, calm down, chill out, cool it, cool off, root, settle, settle, simmer down, steady down, take root