taher (Hebrew #2891)
properly, to be bright; i.e. (by implication) to be pure (physical sound, clear, unadulterated; Levitically, uncontaminated; morally, innocent or holy)
KJV usage: be (make, make self, pronounce) clean, cleanse (self), purge, purify(-ier, self).
Pronounce: taw-hare'
Origin: a primitive root