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clearly; plainly; distinctly; decisively; flatly; definitely; resolutely
彼女はきっぱりと別れを告げて去った。
She flatly said goodbye and left.
悪い習慣をきっぱりやめる決心をした。
I resolved to decisively quit bad habits.
彼はきっぱりと断って話を終わらせた。
He flatly refused and ended the conversation.