נִדָּה niddâh (H5079)

properly, rejection; by implication, impurity, especially personal (menstruation) or moral (idolatry, incest)

1) impurity, filthiness, menstruous, set apart 1a) impurity 1a1) of ceremonial impurity 1a2) of menstruation 1b) impure thing (fig.) 1b1) of idolatry, immorality

from נָדַד (H5074);