to take the plunge
01
to devote one's time and energy to doing or finishing something one was nervous about
例
We took the plunge and set up our own business.
02
結婚を決意する, ついに結婚する
to become someone's wife or husband during a special ceremony
idiom
informal
例
Jennifer had always been afraid of commitment, but when she met Ryan, she knew she wanted to take the plunge and build a life together.
彼は結婚を決意することに緊張していた。



























