| Part of speech | unknown part of speech |
|---|
| Afrikaans | wanneer |
|---|---|
| Danish | hvornår |
| Dutch | wanneer |
| English | when |
| Esperanto | kiam |
| French | quand |
| German | wann |
| Hungarian | mikor |
| Icelandic | hvenær |
| Low German | woneyr; woneer |
| Norwegian | når |
| Papiamento | ki aña; ki tempu |
| Polish | gdy; kiedy |
| Russian | когда |
| Scots | whan |
| Spanish | cuándo |
| Swedish | när |
| Thai | เมื่อไหร่; ตอนไหน |
| Welsh | pa bryd; pryd |
| West Frisian | wannear |
| Yiddish | װען |