| ελληνικά | ell-000 |
| λαθραίος | |
| العربية | arb-000 | مختف |
| luenga aragonesa | arg-000 | clandestino |
| asturianu | ast-000 | clandestín |
| asturianu | ast-000 | ocultu |
| български | bul-000 | нелега́лен |
| български | bul-000 | нелегален |
| български | bul-000 | прикрит |
| български | bul-000 | скрит |
| български | bul-000 | та́ен |
| български | bul-000 | таен |
| català | cat-000 | clandestí |
| català | cat-000 | secret |
| català | cat-000 | subreptici |
| català | cat-000 | subterrani |
| čeština | ces-000 | tajný |
| čeština | ces-000 | utajený |
| čeština | ces-000 | utajovaný |
| čeština | ces-000 | špionážní |
| 普通话 | cmn-000 | 地下 |
| 普通话 | cmn-000 | 暗中 |
| 普通话 | cmn-000 | 暗中的 |
| 普通话 | cmn-000 | 神不知鬼不觉 |
| 普通话 | cmn-000 | 秘密 |
| 普通话 | cmn-000 | 秘密的 |
| 國語 | cmn-001 | 地下 |
| 國語 | cmn-001 | 暗中 |
| 國語 | cmn-001 | 暗中的 |
| 國語 | cmn-001 | 神不知鬼不覺 |
| 國語 | cmn-001 | 秘密 |
| 國語 | cmn-001 | 秘密的 |
| 國語 | cmn-001 | 臥底 |
| Hànyǔ | cmn-003 | shén bù zhī guǐ bù jue |
| Deutsch | deu-000 | Schwarz- |
| Deutsch | deu-000 | Untergrund |
| Deutsch | deu-000 | geheim |
| Deutsch | deu-000 | heimlich |
| Deutsch | deu-000 | illegal |
| Deutsch | deu-000 | klammheimlich |
| Deutsch | deu-000 | klandestin |
| Deutsch | deu-000 | tarnen |
| Deutsch | deu-000 | unter der Hand |
| Deutsch | deu-000 | versteckt |
| ελληνικά | ell-000 | κρυμμένος |
| ελληνικά | ell-000 | κρυφός |
| ελληνικά | ell-000 | μυστικός |
| ελληνικά | ell-000 | υπόγειος |
| English | eng-000 | backstair |
| English | eng-000 | backstairs |
| English | eng-000 | clandescent |
| English | eng-000 | clandestine |
| English | eng-000 | furtive |
| English | eng-000 | hidden |
| English | eng-000 | hole-and-corner |
| English | eng-000 | smuggled |
| English | eng-000 | stealthy |
| English | eng-000 | stowaway |
| English | eng-000 | surreptitious |
| English | eng-000 | underground |
| English | eng-000 | underhand |
| Esperanto | epo-000 | inkognita |
| Esperanto | epo-000 | talpa |
| euskara | eus-000 | klandestino |
| euskara | eus-000 | sekretu |
| suomi | fin-000 | laiton |
| suomi | fin-000 | maanalainen |
| suomi | fin-000 | sala- |
| suomi | fin-000 | salainen |
| suomi | fin-000 | salakuljetettu |
| suomi | fin-000 | vakoilu |
| suomi | fin-000 | vakoilu- |
| français | fra-000 | caché |
| français | fra-000 | cachée |
| français | fra-000 | clandestin |
| français | fra-000 | furtif |
| français | fra-000 | souterrain |
| français | fra-000 | subreptice |
| Frysk | fry-000 | geheim |
| Gàidhlig | gla-000 | falaichte |
| galego | glg-000 | clandestino |
| ἑλληνικὴ γλῶττα | grc-000 | λαθραῖος |
| Српскохрватски | hbs-000 | скрѝвен |
| Srpskohrvatski | hbs-001 | potajno |
| Srpskohrvatski | hbs-001 | prikriveno |
| Srpskohrvatski | hbs-001 | skrìven |
| Srpskohrvatski | hbs-001 | tajan |
| עברית | heb-000 | סודי |
| hrvatski | hrv-000 | krišom urađen |
| magyar | hun-000 | tilalmas |
| interlingua | ina-000 | secrete |
| bahasa Indonesia | ind-000 | rahasia |
| íslenska | isl-000 | laumulegur |
| íslenska | isl-000 | neðanjarðar |
| italiano | ita-000 | clandestina |
| italiano | ita-000 | clandestino |
| italiano | ita-000 | nascosta |
| italiano | ita-000 | nascosto |
| italiano | ita-000 | segreto |
| italiano | ita-000 | surrettizio |
| 日本語 | jpn-000 | himitsu no)不法の |
| 日本語 | jpn-000 | アングラ |
| 日本語 | jpn-000 | 不法 |
| 日本語 | jpn-000 | 秘密 |
| 日本語 | jpn-000 | 秘密の(ひみつの |
| ქართული | kat-000 | საიდუმლო |
| Kurmancî | kmr-000 | dizîkî |
| Kurmancî | kmr-000 | nehênî |
| Kurmancî | kmr-000 | nepenî |
| 한국어 | kor-000 | 남몰래하는 |
| 한국어 | kor-000 | 뒤가 구린 |
| 한국어 | kor-000 | 비밀히 한 |
| 한국어 | kor-000 | 스파이 활동의 |
| 한국어 | kor-000 | 스파이물의 |
| 한국어 | kor-000 | 첩보 활동 |
| latine | lat-000 | clandestinus |
| latine | lat-000 | clandestīnus |
| latviešu | lvs-000 | zaglīgs |
| македонски | mkd-000 | потаен |
| reo Māori | mri-000 | whakamokeke |
| Nederlands | nld-000 | clandestien |
| Nederlands | nld-000 | geheim |
| Nederlands | nld-000 | heimelijk |
| Nederlands | nld-000 | klandestien |
| Nederlands | nld-000 | ondergronds |
| Nederlands | nld-000 | verstopt |
| occitan | oci-000 | clandestin |
| فارسی | pes-000 | پنهانی |
| polski | pol-000 | konspiracyjny |
| polski | pol-000 | pokątny |
| polski | pol-000 | sekretny |
| polski | pol-000 | tajny |
| polski | pol-000 | ukryty |
| português | por-000 | clandestino |
| português | por-000 | escondido |
| português | por-000 | furtivo |
| português | por-000 | secreto |
| română | ron-000 | ascuns |
| română | ron-000 | ascunsă |
| română | ron-000 | clandestin |
| română | ron-000 | dosit |
| română | ron-000 | dosită |
| română | ron-000 | ocult |
| română | ron-000 | pitit |
| română | ron-000 | pitită |
| română | ron-000 | secret |
| română | ron-000 | sub acoperire |
| русский | rus-000 | нелега́льный |
| русский | rus-000 | подпо́льный |
| русский | rus-000 | секре́тный |
| русский | rus-000 | секретный |
| русский | rus-000 | скры́тный |
| русский | rus-000 | та́йный |
| slovenčina | slk-000 | pokútny |
| slovenčina | slk-000 | skrývaný |
| slovenčina | slk-000 | utajovaný |
| slovenščina | slv-000 | skriven |
| español | spa-000 | clandestina |
| español | spa-000 | clandestino |
| español | spa-000 | escondida |
| español | spa-000 | escondido |
| español | spa-000 | furtivo |
| español | spa-000 | sigiloso |
| svenska | swe-000 | hemlig |
| svenska | swe-000 | smyg- |
| తెలుగు | tel-000 | రహస్య |
| ภาษาไทย | tha-000 | ทำอย่างลับ ๆ |
| ภาษาไทย | tha-000 | มีเลศนัย |
| ภาษาไทย | tha-000 | ลอบทำ |
| ภาษาไทย | tha-000 | ลับ ๆ |
| ภาษาไทย | tha-000 | ลี้ลับ |
| ภาษาไทย | tha-000 | เกี่ยวกับการจารกรรม |
| ภาษาไทย | tha-000 | เกี่ยวกับการหาข่าวลับ |
| Türkçe | tur-000 | casusluk |
| Türkçe | tur-000 | casusluk ile ilgili |
| Türkçe | tur-000 | el altından |
| Türkçe | tur-000 | gizli kapaklı |
| Türkçe | tur-000 | gizli yapılan |
| Türkçe | tur-000 | macera |
| Türkçe | tur-000 | polisiye |
| Türkçe | tur-000 | çok gizli |
| українська | ukr-000 | пригодницький |
| українська | ukr-000 | прихований-і-кинжал |
| українська | ukr-000 | романтичний |
| українська | ukr-000 | секретний |
| українська | ukr-000 | шпигунський |
| tiếng Việt | vie-000 | bí mật |