it has different meanings such as- dissolute, jaunty, dashing
etc.
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although she is reclusive in nature but his rakish and daunting
style persuade her to offer him coffee.
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adjective, I believe
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The author you are referring to is John Donne. He was known for his early life as a poet and rakish behavior, before eventually becoming a respected preacher and serving as the Dean of St. Paul's Cathedral in London.