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Impediment
IMPEDIMENT [isbe]
IMPEDIMENT - im-ped'-i-ment: Found in Mk 7:32, "had an impediment in his speech," as a translation of mogilalos, comparative of mogos, "toil" and lalos, "speech," i.e. one who speaks with difficulty. In the Septuagint the word is used as a translation of 'illem, "dumb" (Isa 35:6).
Also see definition of "Impediment" in Word Study