hundred-and-twentieth (adjective)

1. On their hundred-and-twentieth day of marriage, they planned a romantic dinner for two.

2. In the comic book series, the hero triumphs over the villain on the hundred-and-twentieth page.

3. The horror movie climaxed with a terrifying scene on the hundred-and-twentieth minute.

4. Why did the student study for a hundred-and-twentieth day? Because he wanted to score a perfect grade!