seventieth

Twentieth, thirtieth, fourtieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth, hundredth.

to celebrate the seventieth birthday

the seventieth floor of the building

to be the seventieth in line

the seventieth chapter of the book

to reach the seventieth level in the game

the seventieth day of the year

to attend the seventieth high school reunion

the seventieth row in the theater

to be the seventieth person to arrive

2017 actually marks their seventieth wedding anniversary.

We have, this year, marked the seventieth anniversary of the foundation of the United Nations.

He was touching his seventieth year, and though he had a very well-tempered constitution, his hold upon life had lost its firmness.

Then he lit his seventieth cigarette of the day and sat down at the writing-table with the thick wad of his stake money and winnings beside him and entered some figures in a small note-book.

In the matter of years, therefore, his career apparently belongs to the ante-bellum days, yet the most remarkable fact about this remarkable man is that his real life work did not begin until he had passed his seventieth year.