be cut adrift

To be detached or cut off from something. Likened to a boat having its mooring cut so that it drifts freely in the water. She was cut adrift after her parents found drugs in her room and kicked her out of the house. Thankfully, the more extreme factions of this political party have been cut adrift over the years. Ever since Al was cut adrift from his job of 25 years, he has no idea how to spend his days.