diatribist

diatribist

(ˈdaɪəˌtrɪbɪst)
n
(Rhetoric) rare a person who uses diatribes in his or her speeches or writing, etc
References in periodicals archive ?
History will come along to hand out verdicts on everyone in the chattering class, from Raines on down to the most slatternly Fox News Channel diatribist.
Now, this rather dour collection of scholars and diatribists - Allan Bloom, Hilton Kramer, John Silber and so on - are not a particularly appealing group of people.