From Longman Dictionary of Contemporary Englishhold forth phrasal verbTALK TO somebodyto give your opinion on a subject, especially for a long time on The speaker was holding forth on the collapse of modern society. → hold→ See Verb table
Examples from the Corpus
hold forth• What right did anybody have to hold forth about his marriage?• Tom was in the corner, holding forth about the economic situation.• They like being the centre of attention, are more narcissistic, and more likely to hold forth about their achievements.• Grandma was holding forth as usual, retelling all the old family stories.• After a few drinks, he would hold forth for hours on government conspiracy theories.• Archer could hear Lawrence Lefferts, at that very hour, holding forth on the disintegration of society.hold on• And how will it feel after he has held forth on television for five years?• David Lean held forth on the disastrous state of the movie industry.• Archer could hear Lawrence Lefferts, at that very hour, holding forth on the disintegration of society. 