diatribe

[ dahy-uh-trahyb ]
/ ˈdaɪ əˌtraɪb /

noun

a bitter, sharply abusive denunciation, attack, or criticism: repeated diatribes against the senator.

Origin of diatribe

1575–85; < Latin diatriba < Greek diatribḗ pastime, study, discourse, derivative of diatríbein to rub away (dia- dia- + tríbein to rub)
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British Dictionary definitions for diatribe

diatribe
/ (ˈdaɪəˌtraɪb) /

noun

a bitter or violent criticism or attack; denunciation

Word Origin for diatribe

C16: from Latin diatriba learned debate, from Greek diatribē discourse, pastime, from diatribein to while away, from dia- + tribein to rub
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012