| Part of speech | adjective |
|---|---|
| Hyphenation | fi·del·a |
| Singular | Plural | |
|---|---|---|
| Nominative | fidela | fidelaj |
| Accusative | fidelan | fidelajn |
| Catalan | fidel |
|---|---|
| Czech | věrný |
| Danish | tro |
| Dutch | trouw |
| English | faithful |
| Faeroese | trúgvur |
| Finnish | uskollinen |
| French | fidèle |
| German | gläubig; treu; getreu; anhänglich; wahrheitsgetreu; genau; zuverlässig; unbeirrbar |
| Italian | fedele |
| Papiamento | fiel |
| Polish | wierny |
| Portuguese | fiel; leal; seguro |
| Russian | верный |
| Saterland Frisian | tjou; trjou |
| Spanish | fiel; leal |
| Swedish | trogen; trofast |
| Yiddish | געטרײַ |