| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | fajrero | fajreroj |
| Accusative | fajreron | fajrerojn |
| ? | |
|---|---|
| Afrikaans | vonk |
| Albanian | xixë |
| Czech | jiskra |
| Dutch | sprank; vonk; genster |
| English | spark |
| English (Old English) | spearca |
| Faeroese | neisti |
| German | Funke |
| Papiamento | chispa |
| Portuguese | centelha; fagulha; faísca |
| Scottish Gaelic | sradag |
| Spanish | chispa |
| Swedish | gnista |
| West Frisian | fonk |