| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | bireto | biretoj |
| Accusative | bireton | biretojn |
| Catalan | birret; birreta |
|---|---|
| Dutch | baret |
| English | beret; biretta |
| German | Barett; Birett |
| Italian | beretta |
| Portuguese | barrete; borla |
| Saterland Frisian | Barett |
| Spanish | birrete |