| Part of speech | common noun |
|---|---|
| Hyphenation | ko·vert·o |
| Singular | Plural | |
|---|---|---|
| Nominative | koverto | kovertoj |
| Accusative | koverton | kovertojn |
| Catalan | sobre de carta |
|---|---|
| Czech | obal; obálka |
| Danish | konvolut |
| Dutch | briefomslag; couvert; enveloppe |
| English | envelope |
| Faeroese | brævbjálvi |
| Finnish | kirjekuori |
| French | enveloppe |
| German | Briefumschlag; Kuvert; Umschlag |
| Hungarian | boriték |
| Icelandic | bréfumslag |
| Italian | busta |
| Luxemburgish | Hüll |
| Malay | amplop |
| Norwegian | konvolutt |
| Papiamento | ènvelop |
| Polish | koperta |
| Portuguese | envelope; invólucro; sobrecarta |
| Saterland Frisian | Bräifuumsleek; Kuvert; Uumesleek; Uumsleek |
| Scottish Gaelic | cèis |
| Spanish | cubierta; sobre |
| Thai | ซอง |