Synonyms for Rant (same or very similar meaning)
WordNet sense 1 (a loud bombastic declamation expressed with strong emotion):
harangue, rantingWordNet sense 2 (pompous or pretentious talk or writing):
blah, bombast, claptrap, fustianWordNet sense 3 (talk in a noisy, excited, or declamatory manner):
jabber, rave, spout, mouth off, rabbit onFrom the ODE community, based on WordNetadd/edit