From an unused root meaning to set a period (compare H5710 and H5749); the menstrual flux (as periodical); by implication (in plural) soiling: - filthy.
(Chaldee); corresponding to H5710: - {alter} {depart} pass ({away}) {remove} take (away).
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Matrix
Isa 64:6But we are all as an unclean thing, and all our righteousnesses are as filthyH5708 rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.