| English | eng-000 |
| in secret | |
| Universal Networking Language | art-253 | in secret |
| Universal Networking Language | art-253 | in secret(icl>secretly) |
| U+ | art-254 | 6697 |
| azərbaycanca | azj-000 | gizli |
| Азәрбајҹан дили | azj-001 | ҝизли |
| беларуская | bel-000 | потайкам |
| беларуская | bel-000 | тайком |
| беларуская | bel-000 | употай |
| беларуская | bel-000 | употайкі |
| বাংলা | ben-000 | গোপনে থাকা |
| Karo | btx-000 | buni buni |
| català | cat-000 | en secret |
| català | cat-000 | secretament |
| čeština | ces-000 | potají |
| 普通话 | cmn-000 | 暗 |
| 普通话 | cmn-000 | 暗中 |
| 普通话 | cmn-000 | 私下的 |
| 普通话 | cmn-000 | 秘密地 |
| 國語 | cmn-001 | 暗中 |
| 國語 | cmn-001 | 私下的 |
| Hànyǔ | cmn-003 | an3 |
| Hànyǔ | cmn-003 | an4 |
| Hànyǔ | cmn-003 | beidili |
| Hànyǔ | cmn-003 | àn |
| Goukou | cng-004 | tsuku |
| Huilong | cng-005 | hvɑe be du |
| Luhua | cng-006 | ɦəʴɕtu |
| Luoxiang | cng-007 | hɑʐgu |
| Wabo | cng-008 | əʴstuk |
| Weicheng | cng-009 | ʐestəx ta |
| Weigu | cng-011 | ɦæʴsteku |
| Xuecheng | cng-012 | hnɑ tɑ |
| Middle Cornish | cnx-000 | yn-dann gel |
| Kernowek | cor-000 | yn-dann gel |
| tombo so | dbu-001 | bààŋí-yɛ́ káná |
| tombo so | dbu-001 | bóŋú-ndú-go |
| Walo | dbw-000 | gùró |
| Walo | dbw-000 | gùró ní |
| Walo | dbw-000 | zɔ̀wì:ŋgá |
| Deutsch | deu-000 | Geheimnis der Geheimnisse |
| Deutsch | deu-000 | geheim |
| Deutsch | deu-000 | großes Geheimnis |
| Deutsch | deu-000 | heimlich |
| Deutsch | deu-000 | im Geheimen |
| Deutsch | deu-000 | im Verborgenen |
| Deutsch | deu-000 | insgeheim |
| Yolŋu-matha | dhg-000 | ŋaḏup |
| jàmsǎy | djm-000 | guyⁿole |
| jàmsǎy | djm-000 | gúyⁿó lè |
| Beni | djm-003 | bàŋgì-yí |
| Beni | djm-003 | bàŋgìyí |
| Perge Tegu | djm-004 | súgú-yó |
| Mombo | dmb-001 | kùkùyâwⁿ |
| Mombo | dmb-001 | kùkùyâwⁿ kání |
| Togo-Kan | dtk-002 | bàŋ-î: |
| Yorno-So | dts-001 | bàŋ-í: yé: kárⁿá |
| Yorno-So | dts-001 | bàŋ-í: ŋɛ̀ |
| yàndà-dòm | dym-000 | bàn-jà-lí |
| yàndà-dòm | dym-000 | bǎn-jɛ́ |
| eesti | ekk-000 | salaja |
| eesti | ekk-000 | salajas |
| ελληνικά | ell-000 | κρυφά |
| English | eng-000 | back door |
| English | eng-000 | backdoor |
| English | eng-000 | backstage |
| English | eng-000 | behind somebody’s back |
| English | eng-000 | by stealth |
| English | eng-000 | clandestinely |
| English | eng-000 | covert |
| English | eng-000 | covertly |
| English | eng-000 | do secretly |
| English | eng-000 | do stealthily |
| English | eng-000 | furtively |
| English | eng-000 | hugger-mugger |
| English | eng-000 | illegally |
| English | eng-000 | imperceptibly |
| English | eng-000 | in an underhand way |
| English | eng-000 | in private |
| English | eng-000 | in secrecy |
| English | eng-000 | invisibly |
| English | eng-000 | off-the-record |
| English | eng-000 | on the Q.T. |
| English | eng-000 | on the QT |
| English | eng-000 | on the quiet |
| English | eng-000 | on the sly |
| English | eng-000 | privately |
| English | eng-000 | privily |
| English | eng-000 | quietly |
| English | eng-000 | secretly |
| English | eng-000 | silently |
| English | eng-000 | slinkingly |
| English | eng-000 | sneakingly |
| English | eng-000 | stealthily |
| English | eng-000 | stealthy |
| English | eng-000 | surreptitiously |
| English | eng-000 | uncertainly |
| English | eng-000 | underground |
| English | eng-000 | unnoticed |
| English | eng-000 | vaguely |
| Esperanto | epo-000 | kaŝite |
| Esperanto | epo-000 | sekrete |
| euskara | eus-000 | gordeka |
| euskara | eus-000 | isilean |
| euskara | eus-000 | isilik |
| euskara | eus-000 | isilka |
| euskara | eus-000 | isilpean |
| suomi | fin-000 | salaa |
| suomi | fin-000 | salaisesti |
| suomi | fin-000 | vaivihkaa |
| français | fra-000 | clandestinement |
| français | fra-000 | en cachette |
| français | fra-000 | en secret |
| français | fra-000 | secrètement |
| galego | glg-000 | en segredo |
| yn Ghaelg | glv-000 | gyn yss |
| ἑλληνικὴ γλῶττα | grc-000 | εἰς τὸ οὖς |
| ἑλληνικὴ γλῶττα | grc-000 | κρυφαῖος |
| ἑλληνικὴ γλῶττα | grc-000 | κρυφᾷ |
| ἑλληνικὴ γλῶττα | grc-000 | κρυφῆ |
| ἑλληνικὴ γλῶττα | grc-000 | κρυφῇ |
| ἑλληνικὴ γλῶττα | grc-000 | λάθρᾳ |
| ἑλληνικὴ γλῶττα | grc-000 | πρὸς τὸ οὖς |
| ἑλληνικὴ γλῶττα | grc-000 | ἐν κρυπτῷ |
| ἑλληνικὴ γλῶττα | grc-000 | ἐν τῇ σκοτίᾳ |
| Hagfa Pinyim | hak-002 | am5 |
| Hagfa Pinyim | hak-002 | em3 |
| 客家话 | hak-006 | 暗 |
| kreyòl ayisyen | hat-000 | anba chal |
| עִברִית | heb-003 | בַּחֲשַׁאי |
| हिन्दी | hin-000 | गुप्त रूप से |
| हिन्दी | hin-000 | गुप्ततः |
| hrvatski | hrv-000 | kradimice |
| hrvatski | hrv-000 | kradomice |
| hrvatski | hrv-000 | skriveno |
| magyar | hun-000 | titkon |
| magyar | hun-000 | titokban |
| Ido | ido-000 | sekrete |
| bahasa Indonesia | ind-000 | saku-saku |
| bahasa Indonesia | ind-000 | sembunyi-sembunyi |
| italiano | ita-000 | alla chetichella |
| italiano | ita-000 | di nascosto |
| italiano | ita-000 | furtivamente |
| italiano | ita-000 | in segreto |
| italiano | ita-000 | mister |
| italiano | ita-000 | occultamento |
| italiano | ita-000 | secretamente |
| italiano | ita-000 | sottobanco |
| italiano | ita-000 | sottomano |
| 日本語 | jpn-000 | sotto |
| 日本語 | jpn-000 | こっそり |
| 日本語 | jpn-000 | そっと |
| 日本語 | jpn-000 | ひっそり |
| 日本語 | jpn-000 | 人しれず |
| 日本語 | jpn-000 | 人知れず |
| 日本語 | jpn-000 | 内々 |
| 日本語 | jpn-000 | 内内 |
| 日本語 | jpn-000 | 密々 |
| 日本語 | jpn-000 | 密かに |
| 日本語 | jpn-000 | 密密 |
| 日本語 | jpn-000 | 心ひそかに |
| 日本語 | jpn-000 | 心密かに |
| 日本語 | jpn-000 | 忍に |
| 日本語 | jpn-000 | 忍びに |
| 日本語 | jpn-000 | 暗 |
| 日本語 | jpn-000 | 暗々のうちに |
| 日本語 | jpn-000 | 暗暗のうちに |
| 日本語 | jpn-000 | 秘かに |
| 日本語 | jpn-000 | 秘中 |
| 日本語 | jpn-000 | 秘中に |
| 日本語 | jpn-000 | 窃かに |
| 日本語 | jpn-000 | 闇々のうちに |
| 日本語 | jpn-000 | 闇闇のうちに |
| 日本語 | jpn-000 | 陰ながら |
| 日本語 | jpn-000 | 陰乍ら |
| Nihongo | jpn-001 | an |
| Nihongo | jpn-001 | kurai |
| Nihongo | jpn-001 | yami |
| にほんご | jpn-002 | ひそかに |
| にほんご | jpn-002 | ひちゅうに |
| ქართული | kat-000 | არალეგალურად |
| ქართული | kat-000 | უჩუმრად |
| Komo | kmw-000 | ka bocaka |
| Komo | kmw-000 | ka njanjɔ |
| 한국어 | kor-000 | 비밀리에$1$ |
| 한국어 | kor-000 | 비밀히 |
| 한국어 | kor-000 | 소리를 내지 않고 |
| 한국어 | kor-000 | 암 |
| Hangungmal | kor-001 | am |
| 韓國語 | kor-002 | 暗 |
| latine | lat-000 | clam |
| latine | lat-000 | latenter |
| latine | lat-000 | occulte |
| Lingua Franca Nova | lfn-000 | secreta |
| lietuvių | lit-000 | slaptomis |
| 晚期中古漢語 | ltc-000 | 暗 |
| dhɑng djhiɛu xɑ̀n ngiǔ | ltc-002 | qòm |
| morisyin | mfe-000 | ansekre |
| Mambwe | mgr-000 | umfisolo |
| олык марий | mhr-000 | йошт |
| олык марий | mhr-000 | йоштак |
| олык марий | mhr-000 | йоштекын |
| олык марий | mhr-000 | йышт |
| олык марий | mhr-000 | уждымашын |
| олык марий | mhr-000 | уждымын |
| олык марий | mhr-000 | уждымын-колдымын |
| олык марий | mhr-000 | чоян |
| олык марий | mhr-000 | шеҥгеч |
| олык марий | mhr-000 | шеҥгечын |
| олык марий | mhr-000 | шиждымын |
| олык марий | mhr-000 | шолып |
| олык марий | mhr-000 | шолыпын |
| олык марий | mhr-000 | шып |
| олык марий | mhr-000 | шыпак |
| олык марий | mhr-000 | шыпырт |
| Nāhuatlahtōlli | nci-000 | mixtitlan ayauhtitlan |
| isiNdebele | nde-000 | ensitha |
| Nederlands | nld-000 | besmuikt |
| Nederlands | nld-000 | geheim |
| Nederlands | nld-000 | in het geheim |
| Nederlands | nld-000 | stilletjes |
| nàŋ-dàmá | nzz-000 | dàwíyí |
| nàŋ-dàmá | nzz-000 | gùró |
| nàŋ-dàmá | nzz-000 | gùsé |
| nàŋ-dàmá | nzz-000 | gùsó |
| Old Cornish | oco-000 | yn-dann gel |
| فارسی | pes-000 | درنہان |
| русский | rus-000 | втайне |
| русский | rus-000 | нелегально |
| русский | rus-000 | подпольно |
| русский | rus-000 | секретно |
| русский | rus-000 | тайком |
| русский | rus-000 | тайно |
| slovenčina | slk-000 | dôverne |
| slovenčina | slk-000 | tajne |
| Soninkanxaane | snk-000 | muqe |
| español | spa-000 | a escondidas |
| español | spa-000 | a hurtadillas |
| español | spa-000 | bajo mano |
| español | spa-000 | en secreto |
| español | spa-000 | furtivamente |
| español | spa-000 | secretamente |
| srpski | srp-001 | krišom |
| srpski | srp-001 | tajom |
| svenska | swe-000 | hemligen |
| svenska | swe-000 | hemligt |
| Kiswahili | swh-000 | kifichoficho |
| తెలుగు | tel-000 | ఏకాంతంగా |
| ภาษาไทย | tha-000 | มุบมิบ |
| ภาษาไทย | tha-000 | อย่างเป็นความลับ |
| Türkçe | tur-000 | el altından |
| Türkçe | tur-000 | gizli |
| Türkçe | tur-000 | gizli olarak |
| Türkçe | tur-000 | gizlice |
| udin muz | udi-000 | muq̇in |
| udin muz | udi-000 | č̣aṗḳin |
| удин муз | udi-001 | мукъин |
| удин муз | udi-001 | чӀапӀкӀин |
| українська | ukr-000 | потай |
| українська | ukr-000 | потайки |
| українська | ukr-000 | потайно |
| tiếng Việt | vie-000 | ám |
| 𡨸儒 | vie-001 | 暗 |
| Nourmaund | xno-000 | a part |
| Nourmaund | xno-000 | a privé |
| Nourmaund | xno-000 | a secré |
| Nourmaund | xno-000 | celer |
| Nourmaund | xno-000 | de priveté |
| Nourmaund | xno-000 | en occult |
| Nourmaund | xno-000 | en priveté |
| Nourmaund | xno-000 | en privé |
| Nourmaund | xno-000 | en secré |
| gwong2dung1 wa2 | yue-003 | am3 |
| gwong2dung1 wa2 | yue-003 | ngam3 |
| 广东话 | yue-004 | 暗 |
| Bahasa Malaysia | zsm-000 | sembunyi-sembunyi |