: having no roots: such as
a
: lacking firmness or a solid basis : unstable
this explanation we find unconvincing and biologically rootless—
Weston La Barre family and environmental factors which determine the rootless behavior of adolescents—
Frances Keene
b
: lacking a tie or sympathetic relationship with or in the social environment
have become rootless individuals who do not find a home either with their communal environment or with a Christian atmosphere—
J. M. Van der Kroef all are strangers, rootless in place or time, in the nervous new civilization—
T. H. White, born 1915
c
of a tooth
: retaining a pulp cavity widely open at the bottom that permits an abundant supply of nutriment
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Merriam-Webster unabridged
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