| English | eng-000 |
| undercover | |
| Afrikaans | afr-000 | spioen |
| Englisce sprǣc | ang-000 | leassceawere |
| العربية | arb-000 | إستخباري |
| العربية | arb-000 | استخباري |
| العربية | arb-000 | جاسوس |
| العربية | arb-000 | سريّ |
| Romániço | art-013 | secreta |
| Universal Networking Language | art-253 | undercover |
| Universal Networking Language | art-253 | undercover(icl>adj,equ>clandestine) |
| asturianu | ast-000 | espía |
| brezhoneg | bre-000 | spier |
| български | bul-000 | таен агент |
| български | bul-000 | шпионин |
| Burarra | bvr-000 | wupa |
| català | cat-000 | amagat |
| català | cat-000 | clandestí |
| català | cat-000 | encobert |
| català | cat-000 | espia |
| català | cat-000 | ocult |
| català | cat-000 | secret |
| čeština | ces-000 | mlčenlivý |
| čeština | ces-000 | přestrojený |
| čeština | ces-000 | tajný |
| čeština | ces-000 | uzavřený |
| čeština | ces-000 | vyzvědač |
| čeština | ces-000 | zabývající se tajným pátráním |
| čeština | ces-000 | zabývající se špionáží |
| čeština | ces-000 | zvěd |
| čeština | ces-000 | špion |
| čeština | ces-000 | špión |
| 普通话 | cmn-000 | 秘密从事的 |
| 普通话 | cmn-000 | 秘密的 |
| 普通话 | cmn-000 | 被雇间谍活动的 |
| 普通话 | cmn-000 | 间谍 |
| 國語 | cmn-001 | 秘密從事的 |
| 國語 | cmn-001 | 間諜 |
| 國語 | cmn-001 | 隱居秘密 |
| Hànyǔ | cmn-003 | jiàn die |
| Cymraeg | cym-000 | ysbïwr |
| dansk | dan-000 | hemmelig |
| dansk | dan-000 | spion |
| Deutsch | deu-000 | Geheimagent |
| Deutsch | deu-000 | Geheimagentin |
| Deutsch | deu-000 | Spion |
| Deutsch | deu-000 | Spionin |
| Deutsch | deu-000 | geheim |
| Deutsch | deu-000 | heimlich |
| Deutsch | deu-000 | verdeckter Ermittler |
| eesti | ekk-000 | salajane |
| eesti | ekk-000 | spioon |
| ελληνικά | ell-000 | αφανής |
| ελληνικά | ell-000 | κατάσκοπος |
| ελληνικά | ell-000 | κρυφός |
| ελληνικά | ell-000 | μυστικός |
| ελληνικά | ell-000 | μυστικός πράκτορας |
| English | eng-000 | arcane |
| English | eng-000 | backstair |
| English | eng-000 | backstairs |
| English | eng-000 | clandestine |
| English | eng-000 | cloak-and-dagger |
| English | eng-000 | collusive |
| English | eng-000 | confidential |
| English | eng-000 | covert |
| English | eng-000 | dark |
| English | eng-000 | disguised |
| English | eng-000 | esoteric |
| English | eng-000 | espionage |
| English | eng-000 | ex-directory |
| English | eng-000 | furtive |
| English | eng-000 | hidden |
| English | eng-000 | hole-and-corner |
| English | eng-000 | hugger mugger |
| English | eng-000 | hugger-mugger |
| English | eng-000 | hush-hush |
| English | eng-000 | lurking |
| English | eng-000 | mystic |
| English | eng-000 | mystical |
| English | eng-000 | occult |
| English | eng-000 | privacy |
| English | eng-000 | private |
| English | eng-000 | privy |
| English | eng-000 | privy to |
| English | eng-000 | restricted |
| English | eng-000 | sealed |
| English | eng-000 | secret |
| English | eng-000 | secret agent |
| English | eng-000 | skulking |
| English | eng-000 | sneak |
| English | eng-000 | sneaking |
| English | eng-000 | spy |
| English | eng-000 | sub-rosa |
| English | eng-000 | suppressible |
| English | eng-000 | surreptitious |
| English | eng-000 | under |
| English | eng-000 | under wraps |
| English | eng-000 | under-the-counter |
| English | eng-000 | under-the-table |
| English | eng-000 | underground |
| English | eng-000 | underhanded |
| English | eng-000 | underneath |
| English | eng-000 | undisclosed |
| English | eng-000 | unlisted |
| Esperanto | epo-000 | inkognita |
| Esperanto | epo-000 | kaŝobservanto |
| Esperanto | epo-000 | sekreta |
| Esperanto | epo-000 | spiono |
| euskara | eus-000 | ezkutuan |
| euskara | eus-000 | ezkutuko |
| euskara | eus-000 | isilean |
| euskara | eus-000 | isileko |
| euskara | eus-000 | sekretu |
| suomi | fin-000 | maanalainen |
| suomi | fin-000 | salainen |
| suomi | fin-000 | salamyhkäinen |
| suomi | fin-000 | salassa pidetty |
| suomi | fin-000 | vakoilija |
| suomi | fin-000 | vakoilu |
| suomi | fin-000 | vakooja |
| français | fra-000 | agent secret |
| français | fra-000 | barbouze |
| français | fra-000 | clandestin |
| français | fra-000 | dérobée |
| français | fra-000 | espion |
| français | fra-000 | espionne |
| français | fra-000 | secret |
| français | fra-000 | à la dérobée |
| français | fra-000 | épiez |
| français | fra-000 | épions |
| Gaeilge | gle-000 | faoi rún |
| galego | glg-000 | espía |
| yn Ghaelg | glv-000 | fo chlea |
| עברית | heb-000 | מרגל |
| हिन्दी | hin-000 | गुप्त |
| हिन्दी | hin-000 | गुप्त रूप से |
| हिन्दी | hin-000 | भेदिया |
| hrvatski | hrv-000 | tajan |
| hrvatski | hrv-000 | tajni |
| hrvatski | hrv-000 | uhoda |
| magyar | hun-000 | kém |
| magyar | hun-000 | rejtett |
| magyar | hun-000 | titkolt |
| magyar | hun-000 | titkos |
| Ido | ido-000 | sekreta |
| interlingua | ina-000 | clandestin |
| interlingua | ina-000 | secrete |
| bahasa Indonesia | ind-000 | mata mata |
| bahasa Indonesia | ind-000 | rahsia |
| bahasa Indonesia | ind-000 | sulit |
| bahasa Indonesia | ind-000 | tersembunyi |
| íslenska | isl-000 | leynilegur |
| íslenska | isl-000 | njósnari |
| italiano | ita-000 | agente segreto |
| italiano | ita-000 | clandestino |
| italiano | ita-000 | riservato |
| italiano | ita-000 | segreto |
| 日本語 | jpn-000 | スパイ |
| 日本語 | jpn-000 | 内密 |
| 日本語 | jpn-000 | 内密の |
| 日本語 | jpn-000 | 密 |
| 日本語 | jpn-000 | 密か |
| 日本語 | jpn-000 | 密やか |
| 日本語 | jpn-000 | 忍びやか |
| 日本語 | jpn-000 | 秘めやか |
| 日本語 | jpn-000 | 秘やか |
| 日本語 | jpn-000 | 秘密 |
| 日本語 | jpn-000 | 間諜 |
| にほんご | jpn-002 | ないみつの |
| ქართული | kat-000 | თვალთვალი |
| ქართული | kat-000 | ჯაშუში |
| Kurmancî | kmr-000 | casûs |
| Kurmancî | kmr-000 | diznêr |
| Kurmancî | kmr-000 | nepenî |
| Kurmancî | kmr-000 | spiyon |
| Kurmancî | kmr-000 | sîxur |
| Kurmancî | kmr-000 | xefnêr |
| Kurmancî | kmr-000 | şofar |
| 한국어 | kor-000 | 비밀로 행해지는 |
| македонски | mkd-000 | шпион |
| Malti | mlt-000 | aġenti sigriet |
| Tâi-gí | nan-003 | pì-ún-ki bi̍t |
| Nederlands | nld-000 | clandestien |
| Nederlands | nld-000 | geheim |
| Nederlands | nld-000 | geheim agent |
| Nederlands | nld-000 | spion |
| Nederlands | nld-000 | spionne |
| bokmål | nob-000 | spanings- |
| bokmål | nob-000 | spion |
| occitan | oci-000 | espia |
| occitan | oci-000 | espion |
| فارسی | pes-000 | جاسوس |
| polski | pol-000 | szpieg |
| polski | pol-000 | zwiad |
| polski | pol-000 | zwiadowca |
| português | por-000 | agente secreto |
| português | por-000 | clandestino |
| português | por-000 | como agente secreto |
| português | por-000 | escondido |
| português | por-000 | espião |
| português | por-000 | secreto |
| română | ron-000 | secret |
| română | ron-000 | spion |
| română | ron-000 | taină |
| русский | rus-000 | внедрённый |
| русский | rus-000 | работающий под прикрытием |
| русский | rus-000 | разведчик |
| русский | rus-000 | секретный |
| русский | rus-000 | тайный |
| русский | rus-000 | шпион |
| русский | rus-000 | шпионка |
| slovenčina | slk-000 | uzavretý |
| slovenčina | slk-000 | vyzvedač |
| slovenčina | slk-000 | špión |
| slovenščina | slv-000 | ilegalen |
| slovenščina | slv-000 | podtalen |
| slovenščina | slv-000 | skrit |
| slovenščina | slv-000 | skriven |
| slovenščina | slv-000 | skrivnosten |
| slovenščina | slv-000 | tajen |
| slovenščina | slv-000 | tajinstven |
| slovenščina | slv-000 | zaupen |
| Sesotho | sot-000 | tlhwela |
| español | spa-000 | agente secreto |
| español | spa-000 | clandestino |
| español | spa-000 | encubierto |
| español | spa-000 | espia |
| español | spa-000 | espía |
| español | spa-000 | latente |
| español | spa-000 | oculto |
| español | spa-000 | secreto |
| español | spa-000 | subrepticio |
| srpski | srp-001 | žbir |
| Lengua de signos española | ssp-000 | châe-âemámucrey |
| svenska | swe-000 | hemlig |
| svenska | swe-000 | spion |
| తెలుగు | tel-000 | గూఢచారి |
| ภาษาไทย | tha-000 | ทําอย่างลับ ๆ |
| ภาษาไทย | tha-000 | นักสืบราชการลับ |
| ภาษาไทย | tha-000 | ลับๆ |
| ภาษาไทย | tha-000 | ลี้ลับ |
| ภาษาไทย | tha-000 | ลึกลับ |
| ภาษาไทย | tha-000 | สปาย vi. |
| ภาษาไทย | tha-000 | เกี่ยวกับการจารกรรม |
| ภาษาไทย | tha-000 | เกี่ยวกับการหาข่าวลับ |
| ภาษาไทย | tha-000 | ไม่เปิดเผย |
| Türkçe | tur-000 | gizli |
| Türkçe | tur-000 | köstebek |
| українська | ukr-000 | розвідник |
| اردو | urd-000 | بھیدی |
| اردو | urd-000 | جاسوس |
| اردو | urd-000 | خفیہ |
| اردو | urd-000 | خفیہ کام کرنے والا |
| łéngua vèneta | vec-000 | spion |
| tiếng Việt | vie-000 | bí mật |
| tiếng Việt | vie-000 | gián điệp |
| tiếng Việt | vie-000 | giấu giếm |
| ייִדיש | ydd-000 | בסודיק |
| yidish | ydd-001 | besodik |
| Bahasa Malaysia | zsm-000 | bawah tanah |
| Bahasa Malaysia | zsm-000 | pengintipan |
| Bahasa Malaysia | zsm-000 | rahsia |
| Bahasa Malaysia | zsm-000 | sulit |
| Bahasa Malaysia | zsm-000 | tersembunyi |