diatribe

UK: /ˈdaɪətraɪb/ US: /ˈdaɪəˌtraɪb/ ,(dī′ə trīb′)

WordReference Random House Learner's Dictionary of American English © 2025

di•a•tribe /ˈdaɪəˌtraɪb/   n. [countable]

1. a bitter criticism or act of denouncing;
   tirade:
   In her diatribe, she gave full vent to all her resentments.

WordReference Random House Unabridged Dictionary of American English © 2025

di•a•tribe  (dī′ə trīb′), n. 

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

• Greek diatribé̄ pastime, study, discourse, derivative of diatríbein to rub away (dia- dia- + tríbein to rub)
• Latin diatriba
• 1575–85

Synonyms

tirade, harangue.

Collins Concise English Dictionary © HarperCollins Publishers::

diatribe / ˈdaɪəˌtraɪb/ noun

1. a bitter or violent criticism or attack; denunciation

Etymology: 16th Century: from Latin diatriba learned debate, from Greek diatribē discourse, pastime, from diatribein to while away, from dia- + tribein to rub