例文（１級）：expostulate，culmination

I decided to expostulate with my friend about his reckless behavior,
but it was the culmination of his frustration that led him to make
those choices. (私は友人の無謀な行動について彼といさめることに決めたが、それは彼の欲求不満の絶頂が彼をそのような選択をさせた。)

expostulate： （人を）いさめる
culmination： 絶頂