一いっ生しょう涯がい

noun, adverb

lifetime; one's whole life; all through life

Emphasizes the entire span of a person's life, often used in formal or reflective contexts. Can function as a noun or adverbially.

• 彼かれは一いっ生しょう涯がいを教きょう育いくに捧ささげた。

  He devoted his whole life to education.

• 一いっ生しょう涯がい忘わすれられない思おもい出でです。

  It's a memory I'll never forget for the rest of my life.