noun
age seventy; one's seventies
Refers to the age of seventy or the decade of one's seventies. Often used in literary or formal contexts to describe a person's age.
彼は七十路を迎えてもなお元気だ。
He is still energetic even though he has reached the age of seventy.
七十路の坂を越えたと実感する。
I feel that I have passed the milestone of seventy.