transitive verb estranged -·tranged′, estranging -·trang′·ing

1. to remove, as from usual surroundings or associates; keep apart or away
2. to turn (a person) from an affectionate or friendly attitude to an indifferent, unfriendly, or hostile one; alienate the affections of

Etymology: OFr estranger, to remove < ML extraneare, to treat as a stranger < L extraneus, strange