| Part of speech | common noun |
|---|---|
| Hyphenation | rat·o |
| Singular | Plural | |
|---|---|---|
| Nominative | rato | ratoj |
| Accusative | raton | ratojn |
| Afrikaans | rot |
|---|---|
| Catalan | rata |
| Czech | krysa; potkan |
| Danish | rotte |
| Dutch | rat; rot |
| English | rat |
| Faeroese | rotta |
| Finnish | rotta |
| French | rat |
| German | Ratte; Ratze |
| Greek | μεγάλος πόντικος; πόντικος |
| Hungarian | patkány |
| Icelandic | rotta |
| Italian | topo; ratto |
| Latin | rattus; mus |
| Norwegian | rotte |
| Papiamento | djaka |
| Portuguese | ratazana; rato |
| Saterland Frisian | Rotte |
| Scots | ratton |
| Spanish | rata; ratón |
| Sranan | alata |
| Swahili | panya |
| Swedish | råtta |
| Thai | หนู |
| Welsh | llygoden fawr |
| West Frisian | rôt |