prologuize

verb

1. (intransitive)To deliver or create a prologue, as for an oration or for a written or musical work.

   “The place of the prologuizing minstrel is but ill supplied, indeed, by the epistolary dissertations which are prefixed to each book of the present poem.”

   “The duke and his train appear,—the pedagogue prologuizes,—the clowns dance,—and their self-satisfied Coryphaeus apologizes and epiloguizes.”

   “I am a Goddess of the ambrosial courts, And save by Here, Queen of Pride, surpassed By none whose temples whiten this the world.”