This adjective describes unclear, halting, or stammering speech—the tongue that stumbles over words. In Isaiah 32:4, it appears in a prophecy about the transformed kingdom where even those who formerly stammered will speak clearly and fluently. The Septuagint uses a Greek word specifically for stammering or lisping. The term could refer to actual speech impediments or to the unclear speech of foreigners speaking Hebrew poorly. Isaiah envisions a renewal where all forms of limitation and disability will be overcome in the messianic age.