人じん生せい最さい良りょう

noun which may take the genitive case particle 'no'

best ... of one's life

Used as a prenominal modifier (adj-no) to describe the best experience, event, or thing in someone's life so far. Often contrasted with 人生最悪.

Antonyms: 人生最悪

• あの旅りょ行こうは人じん生せい最さい良りょうの思おもい出でです。

  That trip is the best memory of my life.

• 彼かれは人じん生せい最さい良りょうの日ひを迎むかえた。

  He had the best day of his life.