| Part of speech | common noun |
|---|---|
| Hyphenation | se·kret·o |
| Singular | Plural | |
|---|---|---|
| Nominative | sekreto | sekretoj |
| Accusative | sekreton | sekretojn |
| Afrikaans | geheim |
|---|---|
| Catalan | secret |
| Danish | hemmelighed |
| Dutch | geheim; geheimenis |
| English | secret |
| English (Old English) | diegelnes |
| Faeroese | loyndarmál |
| French | arcane; secret |
| German | Geheimnis; Hehl |
| Hungarian | titok |
| Italian | segreto |
| Papiamento | misterio; sekreto; sekretu |
| Polish | tajemnica |
| Portuguese | segredo; sigilo |
| Saterland Frisian | Stilkenes |
| Spanish | secreto |
| West Frisian | geheim |