twenty-first

/twˈɛntifˈɜːst/

/ˈtwɛntiˌfɝst/

twenty-first

coming or happening right after the twentieth person or thing

synonyms : 21st

Examples

1. Had this stylish twenty-first century gentleman somehow found a way to time-travel?

2. Or we could call this 16 twenty-firsts.

3. In the twenty-first century, the ranks of our space travelers must be filled with people of not only high intelligence but great stamina.

4. We’re not in the twenty-first century anymore!