| hrvatski | hrv-000 |
| tajni | |
| asturianu | ast-000 | disimuláu |
| Deutsch | deu-000 | U-Bahn |
| Deutsch | deu-000 | heimlich |
| Deutsch | deu-000 | klammheimlich |
| Deutsch | deu-000 | versteckt |
| Deutsch | deu-000 | verstohlen |
| ελληνικά | ell-000 | άντεργκραουντ |
| ελληνικά | ell-000 | δόλια |
| English | eng-000 | auricular |
| English | eng-000 | back door |
| English | eng-000 | back-door |
| English | eng-000 | confidential |
| English | eng-000 | covert |
| English | eng-000 | occult |
| English | eng-000 | private |
| English | eng-000 | secret |
| English | eng-000 | secrets |
| English | eng-000 | stealthy |
| English | eng-000 | undercover |
| English | eng-000 | underground |
| English | eng-000 | underhand |
| Esperanto | epo-000 | sekreta |
| français | fra-000 | sousterrain |
| hrvatski | hrv-000 | skriven |
| bokmål | nob-000 | undergrunnsbane |
| polski | pol-000 | podstępny |
| português | por-000 | subterrâneo |
| română | ron-000 | disimulat |
| русский | rus-000 | подпольно |
| русский | rus-000 | скрытый |
| русский | rus-000 | тайный |
| slovenčina | slk-000 | skrytý |
| slovenčina | slk-000 | ukrytý |
| español | spa-000 | subterráneo |
| svenska | swe-000 | bedrägligt |
| українська | ukr-000 | схований |