평생이 · 평생을
one's whole life, lifetime; all one's life
Example
할아버지는 평생 이 마을에서 사셨어요.
My grandfather lived in this village his whole life.
Word parts
평 ordinary, even+생 life
Literally 'one's ordinary life', the span of a whole life.
Good to know
Often used alone like an adverb: 평생 잊지 않을게요 'I'll never forget it as long as I live.'
Related words