Definition of "crucially" [crucially]

• In a crucial manner. (adverb)

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• "Don Quixote most crucially, is about the eternal struggle between those who believe in the power of the imagination, versus those who believe that looking harsh reality straight in the face is the only true way to live a life."
• "And yet the work, most crucially, is also about the eternal struggle between those who believe in the power of the imagination and books, versus those who believe that looking harsh reality straight in the face is the only true way to live a life."
• "I guess what I'm getting at is that all the simplifying movements we've been talking about might be musically/aesthetically similar, but in crucially different relationship — both in creation and reception — to the contemporary political structure, mainly because we Americans have such an odd approach to the whole simple/complex question."