Impediment

im-ped’-i-ment: Found in Mr 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).