| Part of speech | unknown part of speech |
|---|
| Nominative | Perestrojko |
|---|---|
| Accusative | Perestrojkon |
| Danish | Perestrojka |
|---|---|
| Dutch | perestroika |
| English | Perestroika |
| French | Perestroïka |
| German | Perestroika |
| Greek | Περεστρόικα |
| Norwegian | Perestrojka |
| Papiamento | Perestròika |
| Portuguese | Perestroika |
| Russian | Перестройка |
| Spanish | Perestroika |
| Swedish | Perestrojka |