| Part of speech | common noun |
|---|---|
| Hyphenation | se·majn·o |
| Singular | Plural | |
|---|---|---|
| Nominative | semajno | semajnoj |
| Accusative | semajnon | semajnojn |
| Afrikaans | week |
|---|---|
| Albanian | javë |
| Catalan | setmana |
| Chinook Jargon | |
| Czech | týden |
| Danish | uge |
| Dutch | week |
| English | week |
| English (Old English) | wicu; wice; wucu |
| Faeroese | vika |
| Finnish | viikko |
| French | semaine |
| German | Woche |
| Hungarian | hét |
| Icelandic | vika |
| Italian | settimana |
| Jamaican Patois | wiik |
| Low German | weake |
| Luxemburgish | Woch |
| Norwegian | uke; veke |
| Papiamento | siman |
| Polish | tydzień |
| Portuguese | semana |
| Romanian | săptămână |
| Russian | неделя |
| Saterland Frisian | Wiek |
| Scottish Gaelic | seachdain |
| Spanish | semana |
| Sranan | wiki |
| Swahili | juma; wiki |
| Swedish | vecka |
| Thai | อาทิตย์; สัปดาห์ |
| Turkish | hafta |
| Ukrainian | тиждень |
| Welsh | wythnos |
| West Frisian | wike |
| Yiddish | װאָך |