| 日本語 | jpn-000 |
| 退化する | |
| English | eng-000 | become worse |
| English | eng-000 | degenerate |
| English | eng-000 | degrade |
| English | eng-000 | deteriorate |
| English | eng-000 | retrograde |
| English | eng-000 | retrogress |
| Esperanto | epo-000 | degeneri |
| 日本語 | jpn-000 | 種の特質を失う |
| にほんご | jpn-002 | たいかする |
| português | por-000 | degradar |
| português | por-000 | retrogradar |
| русский | rus-000 | деградировать |