think moodily or anxiously about something
originate (in); "The problems dwell in the social injustices in this country"
be an inhabitant of or reside in; "People lived in Africa millions of years ago"; "The people inhabited the islands that are now deserted"; "this kind of fish dwells near the bottom of the ocean"; "deer are populating the woods"
exist or be situated within; "Strange notions inhabited her mind"
come back to; "Don't dwell on the past"; "She is always harping on the same old things"