The Collaborative International Dictionary of English v.0.48:

Speechifier \Speech"i*fi`er\, n.
   One who makes a speech or speeches; an orator; a declaimer.
   [Used humorously or in contempt.] --G. Eliot.
   [1913 Webster]

WordNet (r) 3.0 (2006):

speechifier
    n 1: a person who delivers a speech or oration [syn: orator,
         speechmaker, rhetorician, public speaker,
         speechifier]