Of a plant or another thing, having no roots. / Being a wanderer; having no ties to a particular locale. / (computing) Without (the use of) a root user account.

The property of being rootless.

plural of rootlessness

(euphemistic, derogatory) Jew, particularly in the context of the antisemitic Soviet Union campaign of 1948-1953.

plural of rootless cosmopolitan

In a rootless manner.