| Part of speech | unknown part of speech |
|---|
| ? | |
|---|---|
| Afrikaans | vier |
| Albanian | katër |
| Catalan | quatre |
| Czech | čtyři; čtyřka |
| Danish | fire |
| Dutch | vier |
| English | four |
| English (Old English) | feower |
| Faeroese | fýra |
| Finnish | neljä |
| French | quatre |
| German | vier |
| Greek | τέσσερα |
| Hawaiian | hā |
| Hungarian | négy |
| Icelandic | fjórir |
| Italian | quattro |
| Jamaican Patois | fuo; fuor |
| Kabylian | kuz |
| Latin | quattuor |
| Low German | veer |
| Luxemburgish | véier |
| Malay | empat |
| Norwegian | fire |
| Papiamento | kuater; kuatro |
| Polish | cztery |
| Portuguese | quatro |
| Romanian | patru |
| Russian | четыре |
| Saterland Frisian | fjauer |
| Scottish Gaelic | ceithir |
| Spanish | cuatro |
| Sranan | fo |
| Swahili | nne |
| Swedish | fyra |
| Tagalog | apat |
| Thai | สี่ |
| Turkish | dört |
| West Frisian | fjouwer |
| Yiddish | פֿיר |