In a manner related to the Bolsheviks or their revolutionary communist ideology and methods.
From Bolshevik (Russian bol'sheviki, meaning 'majority') + -ical suffix + -ly adverb marker. The term originated from Lenin's faction of the Russian Social Democratic Labor Party, which claimed to represent the 'majority' of workers.
Language captured a whole political revolution in one word—'bolshevistically' became shorthand for everything from violent overthrow to radical social change, showing how a single historical movement can reshape vocabulary across dozens of languages.
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