talkathon

[taw-kuh-thon]
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noun
  1. an unusually long speech or discussion, especially on a matter of public interest, as a Congressional filibuster or a televised question-and-answer session with a political candidate.

Origin of talkathon

First recorded in 1930–35; talk + -athon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018