| Portuguese_3.0 | Catalan_3.0 | German_3.0 | English_3.0 | Basque_3.0 | French_3.0 | Galician_3.0 | Spanish_3.0 | |
|---|---|---|---|---|---|---|---|---|
| impenetrável | impregnable, inexpugnable | imprenable, inexpugnable | impenetrable, impenetrábel, inexpugnable, inexpugnábel | inexpugnable | ||||
| impregnable, inviolable, secure, strong, unassailable, unattackable | imprenable, inexpugnable, puissant | inatacable, inexpugnable, inviolable |