| Part of speech | common noun |
|---|---|
| Gender | common |
| Singular | Plural | |||
|---|---|---|---|---|
| Indefinite | Definite | Indefinite | Definite | |
| Nominative | onsdag | onsdagen | onsdage | onsdagene |
| Genitive | onsdags | onsdagens | onsdages | onsdagenes |
| Afrikaans | Woensdag |
|---|---|
| Albanian | mërkurë |
| Catalan | dimecres |
| Czech | středa |
| Dutch | woensdag |
| English | Wednesday |
| Esperanto | merkredo |
| Faeroese | mikudagur |
| Finnish | keskiviikko |
| French | mercredi |
| German | Mittwoch |
| Greek | Τετάρτη |
| Hungarian | szerda |
| Icelandic | miðvikudagur |
| Italian | mercoledì |
| Jamaican Patois | Wenzde |
| Low German | woonsdag; middeweaken; goonsdag |
| Malay | Rabu |
| Norwegian | onsdag |
| Papiamento | djarason |
| Polish | środa |
| Portuguese | quarta‐feira |
| Romanian | miercuri |
| Russian | среда |
| Saterland Frisian | Middewiek; Midwiek |
| Scots | Wadensday |
| Scottish Gaelic | Di‐ciadain |
| Spanish | miércoles |
| Swahili | Jumatano |
| Swedish | onsdag |
| Thai | พุธ; วันพุธ |
| Turkish | çarşamba |
| Welsh | dydd Mercher |
| West Frisian | woansdei |