speechify

verb2

1. •
   To give a speech; to hold forth; (now especially) to pronounce pompously or at length.

   • Caleb was a powerful man and knew little of any fear except the fear of hurting others and the fear of having to speechify. — 1871
2. •
   (no longer used) To make speeches to (someone); to address in a speech.

   • They take their little enjoyments on little means and with little things and don't let solemn big-wigs stare them out of countenance or speechify them dull. — 1864