The Collaborative International Dictionary of English v.0.48:

Speechify \Speech"i*fy\, v. i. [imp. & p. p. Speechified; p.
   pr. & vb. n. Speechifying.] [Speech + -fy.]
   To make a speech; to harangue. [Used derisively or
   humorously.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

speechify
    v 1: make speeches; hold forth, or harangue with a certain
         degree of formality; "These ministers speechify on every
         occasion"