Definition of "momentously" []

• In a momentous manner. (adverb)

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• "Said differently, Bob Dylan's Greatest Hits, that album that so momentously marked my arrival to the world!"
• "More momentously, LTCM made the mistake of going long on Russian bonds right before Russia defaulted."
• "It is a momentously large yet profoundly intimate subject, ideally suited to a writer whose best work has always combined historical breadth with psychological depth."