diatribe
ˈdʌɪətrʌɪb/
noun
noun: diatribe; plural noun: diatribes
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a forceful and bitter verbal attack against someone or something.“a diatribe against consumerism”
synonym 
s:tirade, harangue, verbal onslaught, verbal attack, stream of abuse,denunciation, broadside, fulmination, condemnation, criticism, stricture,reproof, reproval, reprimand, rebuke, admonishment, admonition; More
Origin
late 16th century (denoting a disquisition): from French, via Latin from Greek diatribē‘spending of time, discourse’, from dia ‘through’ + tribein ‘rub’.
How my heart sings 