| Decennie | EN standard | EN informel |
|---|---|---|
| 1920-1929 | the nineteen twenties | the roaring twenties / the '20s |
| 1960-1969 | the nineteen sixties | the '60s |
| 1990-1999 | the nineties | the '90s |
| 2000-2009 | the two thousands | the noughties (UK) / the '00s |
| 2010-2019 | the twenty-tens | the 2010s |
| 2020-2029 | the twenty-twenties | the 2020s |