I felt rootless to the point of nonexistence.

Jay feels rootless, adrift between England and India.

For the first time, he felt rootless, like an exotic orchid that had been grown without soil.

Suddenly, he felt rootless-disassociatedfrom people.

Being motherless, she felt rootless.

When I was just writing I felt rootless and useless most of the time, and that's not good for me.