Source : Webster's Revised Unabridged Dictionary (1913)

Utterer \Ut"ter*er\, n.
   One who utters. --Spenser.

Source : WordNet®

utterer
     n 1: an organism that can utter vocal sounds; "an utterer of foul
          oaths"; "is the giraffe a vocalizer?" [syn: {vocalizer},
           {vocaliser}]
     2: someone who circulates forged banknotes or counterfeit coins
     3: someone who expresses in language; someone who talks
        (especially someone who delivers a public speech or
        someone especially garrulous); "the speaker at
        commencement"; "an utterer of useful maxims" [syn: {speaker},
         {talker}, {verbalizer}, {verbaliser}]