| Portuguese_3.0 | Catalan_3.0 | German_3.0 | English_3.0 | Basque_3.0 | French_3.0 | Galician_3.0 | Spanish_3.0 | |
|---|---|---|---|---|---|---|---|---|
| inerrable, inerrant, unerring | infalible, infalíbel | infalible | ||||||
| infalível | unfehlbar | infallible | infaillible | infalible, infalíbel | infalible | |||
| fail-safe | infalible | |||||||
| seguro | infal·lible, segur | foolproof, unfailing | certero, infalible, seguro |