Easton's Bible Dictionary (1897)/Dumb

Dumb : From natural infirmity (Ex. 4:11); not knowing what to say (Prov. 31:8); unwillingness to speak (Ps. 39:9; Lev. 10:3). Christ repeatedly restored the dumb (Matt. 9:32, 33; Luke 11:14; Matt. 12:22) to the use of speech.