(いっしょう)

いっしょう
noun/adverb
whole life, lifetime
1. whole life, lifetime
The entire span of one's life from birth to death.
一生(いっしょう)(おも)()なった
It became a memory for a lifetime.
一生(いっしょう)友達(ともだち)できた
I made a lifelong friend.
It's a once-in-a-lifetime experience.
Common expression
My grandfather's life was eventful, and he overcame many hardships.
That trip became a memory for a lifetime. If I get the chance, I'd like to visit that place again.
2. for life, forever
For the rest of one's life, permanently.
一生(いっしょう)(わす)れません
I'll never forget it for the rest of my life.
この仕事(しごと)一生(いっしょう)かける
I'll devote my whole life to this work.
一生(いっしょう)あなた(あい)します
I'll love you forever.
When I think we might never meet again, I feel lonely.
I will probably never forget the words my teacher said to me that day.

一生(いっしょう) means one's entire life or lifetime. It functions as both a noun and an adverb.

AS A NOUN (一生(いっしょう)の〜):

  • 一生(いっしょう)(おも)(): a memory for a lifetime
  • 一生(いっしょう)友達(ともだち): a lifelong friend
  • 一生(いっしょう)仕事(しごと): life's work
  • 一生(いっしょう)をかける: to devote one's life to

AS AN ADVERB (一生(いっしょう)〜):

  • 一生(いっしょう)(わす)れない: will never forget (for the rest of one's life)
  • 一生(いっしょう)()えない: will never meet again

KEY EXPRESSIONS:

  • 一生(いっしょう)一度(いちど): once in a lifetime (very common expression)
  • 一生懸命(いっしょうけんめい): with all one's might (separate word, but related)

SIMILAR WORDS:

  • 生涯(しょうがい): lifetime (more formal/literary)
  • 人生(じんせい): life (emphasizes the journey, experiences, choices)