| Kiswahili | swh-000 |
| -gumu | |
| Afrikaans | afr-000 | moeilik |
| aršatten č’at | aqc-000 | balatːut |
| aršatten č’at | aqc-000 | tʼanqʼdut |
| العربية | arb-000 | متشدد |
| luenga aragonesa | arg-000 | dificil |
| luenga aragonesa | arg-000 | difízil |
| Mapudungun | arn-000 | küzawngelu |
| Mapudungun | arn-000 | yafü |
| LWT Code | art-257 | 15.74 |
| LWT Code | art-257 | 17.47 |
| asturianu | ast-000 | difícil |
| Arabic-script Eastern Libyan Arabic | ayl-000 | واعر |
| boarisch | bar-000 | hoat |
| boarisch | bar-000 | håt |
| Bende | bdp-000 | komu |
| Bende | bdp-000 | nkomu |
| বাংলা | ben-000 | কঠিন |
| Ekibena | bez-000 | kangafu |
| Bonde | bou-001 | kaidahika |
| Bonde | bou-001 | nkaidahika |
| brezhoneg | bre-000 | start |
| български | bul-000 | труден |
| Kaliʼna | car-000 | tupime |
| Kaliʼna | car-000 | tɨyanale |
| català | cat-000 | difícil |
| català | cat-000 | dur |
| Chamicuro | ccc-000 | yeewa |
| čeština | ces-000 | obtížný |
| Rukiga | cgg-000 | gumire |
| ѩзыкъ словѣньскъ | chu-000 | тѧжъкъ |
| 普通话 | cmn-000 | 硬 |
| 普通话 | cmn-000 | 艰难 |
| 普通话 | cmn-000 | 难 |
| 普通话 | cmn-000 | 难捱 |
| 國語 | cmn-001 | 困難的 |
| 國語 | cmn-001 | 艱難 |
| 國語 | cmn-001 | 艱難的 |
| 國語 | cmn-001 | 難 |
| 國語 | cmn-001 | 難捱 |
| Hànyǔ | cmn-003 | kunnan |
| Hànyǔ | cmn-003 | kùnnán |
| Hànyǔ | cmn-003 | nan |
| Hànyǔ | cmn-003 | nan2 |
| Hànyǔ | cmn-003 | nán ai |
| Hànyǔ | cmn-003 | ying4 |
| Qırımtatar tili | crh-000 | qıyın |
| Qırımtatar tili | crh-000 | zor |
| seselwa | crs-000 | difisil |
| seselwa | crs-000 | dir |
| seselwa | crs-000 | dyanm |
| Chuka | cuh-000 | kIumo |
| Chuka | cuh-000 | umo |
| Kwere | cwe-000 | dala |
| Cheʼ Wong | cwg-000 | cgih |
| Cheʼ Wong | cwg-000 | payɑh |
| Cheʼ Wong | cwg-000 | susɑh |
| Cymraeg | cym-000 | anodd |
| dansk | dan-000 | vanskeligt |
| Kitaita | dav-000 | ikurie |
| Kitaita | dav-000 | kurie |
| Deutsch | deu-000 | hart |
| Deutsch | deu-000 | kniffelig |
| Deutsch | deu-000 | kompliziert |
| Deutsch | deu-000 | schwererziehbar |
| Deutsch | deu-000 | vertrackt |
| South Central Dinka | dib-000 | -gumu |
| South Central Dinka | dib-000 | -ifu |
| dolnoserbska reč | dsb-000 | twardy |
| dolnoserbska reč | dsb-000 | śěžki |
| Kĩembu | ebu-000 | UmU |
| Kĩembu | ebu-000 | kIUmU |
| eesti | ekk-000 | keeruline |
| ελληνικά | ell-000 | δίσκολος |
| ελληνικά | ell-000 | δύσκολος |
| ελληνικά | ell-000 | δύσκολος-η-ο |
| English | eng-000 | difficult |
| English | eng-000 | firm |
| English | eng-000 | hard |
| English | eng-000 | miserly |
| English | eng-000 | puzzling |
| English | eng-000 | solid |
| English | eng-000 | strong |
| English | eng-000 | stubborn |
| English | eng-000 | tough |
| Esperanto | epo-000 | klopoda |
| Esperanto | epo-000 | malfacila |
| euskara | eus-000 | zail |
| føroyskt | fao-000 | illur |
| føroyskt | fao-000 | torførur |
| suomi | fin-000 | kimurantti |
| suomi | fin-000 | vaativa |
| Fipa | fip-000 | koma |
| Fipa | fip-000 | yakoma |
| séliš | fla-000 | tiltiligut |
| français | fra-000 | difficile |
| français | fra-000 | dur |
| français | fra-000 | malaisé |
| Frysk | fry-000 | slim |
| Gàidhlig | gla-000 | doirbh |
| Gàidhlig | gla-000 | mì-fhurasda |
| Gaeilge | gle-000 | deacair |
| galego | glg-000 | difícil |
| yn Ghaelg | glv-000 | trome |
| diutisk | goh-000 | hart |
| diutisk | goh-000 | unsemfti |
| Gurindji | gue-000 | patawarn |
| ગુજરાતી | guj-000 | કઠિન |
| Ekegusii | guz-000 | egekongʼu |
| Ekegusii | guz-000 | kongʼu |
| Gawwada—Dalpena | gwd-000 | rakko |
| Gawwada—Dalpena | gwd-000 | xaha |
| Gwere | gwr-000 | gumu |
| Gwere | gwr-000 | kigumu |
| Hangaza | han-000 | gumye |
| Ha | haq-000 | gumye |
| kreyòl ayisyen | hat-000 | difisil |
| Hausa | hau-000 | mài táuríi |
| Hausa | hau-000 | mài wùyáa |
| ʻōlelo Hawaiʻi | haw-000 | paʻa |
| ʻōlelo Hawaiʻi | haw-000 | paʻakīkī |
| Haya | hay-000 | gumire |
| עברית | heb-000 | קשה |
| Hehe | heh-000 | angafu |
| हिन्दी | hin-000 | कठिन |
| हिन्दी | hin-000 | मुशकिल |
| हिन्दी | hin-000 | मुश्किल |
| हिन्दी | hin-000 | विकट |
| hrvatski | hrv-000 | teško |
| արևելահայերեն | hye-000 | զոռ |
| Ido | ido-000 | desfacila |
| Ikizu | ikz-000 | kongʼu |
| interlingua | ina-000 | difficile |
| bahasa Indonesia | ind-000 | keras |
| bahasa Indonesia | ind-000 | sukar |
| bahasa Indonesia | ind-000 | sulit |
| bahasa Indonesia | ind-000 | susah |
| Iraqw | irk-000 | gawid |
| íslenska | isl-000 | vandur |
| íslenska | isl-000 | þungur |
| italiano | ita-000 | acerbo |
| italiano | ita-000 | adamantino |
| italiano | ita-000 | arduo |
| italiano | ita-000 | asciutto |
| italiano | ita-000 | aspro |
| italiano | ita-000 | austero |
| italiano | ita-000 | brusco |
| italiano | ita-000 | buio |
| italiano | ita-000 | burbero |
| italiano | ita-000 | caparbio |
| italiano | ita-000 | cattivo |
| italiano | ita-000 | cocciuto |
| italiano | ita-000 | compatto |
| italiano | ita-000 | complesso |
| italiano | ita-000 | complicato |
| italiano | ita-000 | concreto |
| italiano | ita-000 | consistente |
| italiano | ita-000 | coraggioso |
| italiano | ita-000 | crasso |
| italiano | ita-000 | critico |
| italiano | ita-000 | difficile |
| italiano | ita-000 | difficoltosa |
| italiano | ita-000 | dittatoriale |
| italiano | ita-000 | draconiano |
| italiano | ita-000 | inclemente |
| italiano | ita-000 | indaginoso |
| italiano | ita-000 | malagevole |
| Jita | jit-000 | komee |
| Kimachame | jmc-000 | umu |
| 日本語 | jpn-000 | 困難 |
| 日本語 | jpn-000 | 固い |
| 日本語 | jpn-000 | 堅い |
| 日本語 | jpn-000 | 大事な |
| 日本語 | jpn-000 | 硬い |
| 日本語 | jpn-000 | 難しい |
| Nihongo | jpn-001 | katai |
| Nihongo | jpn-001 | konnan |
| Nihongo | jpn-001 | muzukashii |
| Jupda | jup-000 | hamhũynɨ́h |
| Jupda | jup-000 | tabʼáʔ |
| Kĩkamba | kam-000 | UmU |
| Kamba Kitui | kam-001 | gUmU |
| Kamba Kitui | kam-001 | ngUmU |
| bežƛʼalas mic | kap-001 | -äqʼqʼö |
| bežƛʼalas mic | kap-001 | qäčʼčʼö |
| bežƛʼalas mic | kap-001 | zahmatab |
| ქართული | kat-000 | ძნელი |
| Chimakonde | kde-000 | kamaja |
| Chimakonde | kde-000 | ukamaja |
| Maviha | kde-001 | kunonopa |
| Maviha | kde-001 | nonopa |
| Kerewe | ked-000 | guma |
| Kerewe | ked-000 | kuguma |
| Q’eqchi’ | kek-000 | ch'a'aj |
| Q’eqchi’ | kek-000 | kaw |
| Ket | ket-000 | bɯ̄t |
| Ket | ket-000 | səə |
| Khasi | kha-000 | bashitom |
| Kimbu | kiv-000 | xalu |
| Kisi | kiz-000 | nonono |
| كورمانجى | kmr-002 | زهحمهت |
| كورمانجى | kmr-002 | سهخت |
| Kanuri | knc-000 | cíbbù |
| Kanuri | knc-000 | jâu |
| 한국어 | kor-000 | 곤란한 |
| 한국어 | kor-000 | 어렵다 |
| Kuria | kuj-000 | egekongʼu |
| Kuria | kuj-000 | kongʼu |
| Kuria Tarime | kuj-001 | kongʼu |
| Kɨlaangi | lag-000 | fafa |
| Kɨlaangi | lag-000 | kufafa |
| Lambya | lai-000 | gomu |
| Lambya | lai-000 | igomu |
| lietuvių | lit-000 | keblumas |
| lietuvių | lit-000 | sudėtingas |
| lietuvių | lit-000 | sunkiai sukalbamas |
| Lumbaart | lmo-006 | düür |
| Oluganda | lug-000 | kalubo |
| latviešu | lvs-000 | grūts |
| latviešu | lvs-000 | sarežģīts |
| मराठी | mar-000 | कठिण |
| Malila | mgq-000 | home |
| Malila | mgq-000 | ihome |
| Mambwe | mgr-000 | chikome |
| Mambwe | mgr-000 | ichikome |
| Rungu | mgr-001 | kome |
| Manda | mgs-000 | nonono |
| Matengo | mgv-000 | ngumu |
| Matumbi | mgw-000 | nonopau |
| Mpoto | mpa-000 | kunonopa |
| Mpoto | mpa-000 | nonopa |
| Mwera | mwe-000 | limba |
| Nyamwanga | mwn-000 | kala |
| Hmoob Dawb | mww-000 | nyuab |
| Hmoob Dawb | mww-000 | nyuaj |
| Hmoob Dawb | mww-000 | tawv |
| Masaba | myx-000 | kumu |
| Masaba | myx-000 | sikumu |
| Wichí Lhamtés Güisnay | mzh-000 | atha |
| Wichí Lhamtés Güisnay | mzh-000 | tʼen |
| 台灣話 | nan-000 | khùn-lân |
| 台灣話 | nan-000 | 困难 |
| 台灣話 | nan-000 | 困難 |
| napulitano | nap-000 | deffìcile |
| Ndengereko | ndg-000 | nnonopa |
| Ndengereko | ndg-000 | nonopa |
| ichiindali | ndh-000 | gafu |
| ichiindali | ndh-000 | ngafu |
| Ndari | ndh-001 | gafu |
| Ndari | ndh-001 | ngafu |
| Ndamba | ndj-000 | komu |
| Ndamba | ndj-000 | likomu |
| Ngoni | ngo-000 | nonono |
| Ngurimi | ngq-000 | kongʼu |
| Ngurimi | ngq-000 | nkongʼu |
| Nilamba | nim-000 | aku |
| Nilamba | nim-000 | kyaku |
| Nederlands | nld-000 | difficiel |
| Nederlands | nld-000 | hard |
| Nederlands | nld-000 | kwalijk |
| Nederlands | nld-000 | moeilijk |
| Manang | nmm-000 | 4kole-1kʰʌ |
| Manang | nmm-000 | kjoŋ |
| bokmål | nob-000 | vanskelig |
| Nyambo | now-000 | gumile |
| Ikoma | ntk-000 | kongu |
| Nyamwezi | nym-000 | daam |
| Ntuzu | nym-001 | idimu |
| Runyankore | nyn-000 | gumire |
| Runyoro | nyo-000 | ekigumire |
| Runyoro | nyo-000 | gumire |
| Nyakyusa-Ngonde | nyy-000 | kafu |
| Nyakyusa-Ngonde | nyy-000 | ubukafu |
| occitan | oci-000 | dificil |
| occitan | oci-000 | dur |
| occitan | oci-000 | malaisit |
| Orochon | orh-000 | katangʊ |
| Orochon | orh-000 | mani |
| Hñähñu | ote-000 | xi hñei |
| Hñähñu | ote-000 | xi hñembi |
| Hñähñu | ote-000 | xi me |
| فارسی | pes-000 | دشوار |
| فارسی | pes-000 | سخت |
| Pimbwe | piw-000 | koma |
| fiteny Malagasy | plt-000 | màfy |
| fiteny Malagasy | plt-000 | sàrotra |
| lenga piemontèisa | pms-000 | mal fé |
| polski | pol-000 | trudna |
| polski | pol-000 | trudne |
| polski | pol-000 | trudny |
| português | por-000 | afanoso |
| português | por-000 | dificultoso |
| português | por-000 | difícil |
| Pogolo | poy-000 | kamala |
| Impapura | qvi-000 | sinchi |
| Logooli | rag-000 | dinyu |
| Logooli | rag-000 | kidinyu |
| Riff | rif-000 | qsəħ |
| Riff | rif-000 | wʕāʼ |
| Nyaturu | rim-000 | ikaku |
| Nyaturu | rim-000 | kaku |
| Chahi | rim-001 | kaku |
| Chahi | rim-001 | nkaku |
| Selice Romani | rmc-002 | pháro |
| Selice Romani | rmc-002 | zorálo |
| Rungwa | rnw-000 | kom |
| Lungwa | rnw-001 | kom |
| Kihorombo | rof-000 | domari |
| Kihorombo | rof-000 | kidomari |
| Mkuu | rof-001 | umu |
| română | ron-000 | anevoios |
| română | ron-000 | complicat |
| română | ron-000 | dificil |
| română | ron-000 | difícil |
| română | ron-000 | greu |
| română | ron-000 | tare |
| Rufiji | rui-000 | inonwipe |
| Rufiji | rui-000 | nonwipe |
| Kirundi | run-000 | guma |
| русский | rus-000 | жадный |
| русский | rus-000 | жесткий |
| русский | rus-000 | жестокий |
| русский | rus-000 | затруднительный |
| русский | rus-000 | компактный |
| русский | rus-000 | крепкий |
| русский | rus-000 | нелегкий |
| русский | rus-000 | непреклонный |
| русский | rus-000 | несговорчивый |
| русский | rus-000 | плотный |
| русский | rus-000 | прочный |
| русский | rus-000 | решительный |
| русский | rus-000 | скупой |
| русский | rus-000 | суровый |
| русский | rus-000 | твердый |
| русский | rus-000 | трудный |
| русский | rus-000 | тяжелый |
| русский | rus-000 | упрямый |
| Meruimenti | rwk-001 | umo |
| Merutig | rwk-002 | jumu |
| Merutig | rwk-002 | njumu |
| Saxa tyla | sah-001 | kɨtaːnaχ |
| Saxa tyla | sah-001 | ɨaraχan |
| संस्कृतम् | san-000 | अलभ्य |
| Ishisangu | sbp-000 | nyumu |
| lingua siciliana | scn-000 | diffìcili |
| Scots leid | sco-000 | thrawn |
| Кӣллт са̄мь кӣлл | sjd-000 | кэ̄рр |
| Кӣллт са̄мь кӣлл | sjd-000 | рэ̄ссесь |
| slovenčina | slk-000 | neľahká |
| slovenčina | slk-000 | neľahké |
| slovenčina | slk-000 | neľahký |
| slovenčina | slk-000 | obtiažny |
| slovenčina | slk-000 | obťažné |
| slovenčina | slk-000 | ťažká |
| slovenčina | slk-000 | ťažké |
| slovenčina | slk-000 | ťažký |
| Temi | soz-000 | mondogo |
| Temi | soz-000 | ndogo |
| shqip | sqi-000 | vështirë |
| sardu | srd-000 | difìtzile |
| Saamáka | srm-000 | taánga |
| српски | srp-000 | тешко |
| srpski | srp-001 | teško |
| Lengua de signos española | ssp-000 | ch.émacb |
| Shubi | suj-000 | gumye |
| Shubi | suj-000 | ikigumye |
| Sukuma | suk-000 | mu |
| Sumbwa | suw-000 | gume |
| svenska | swe-000 | komplicerad |
| svenska | swe-000 | svår |
| Kiswahili | swh-000 | -a dhati |
| Kiswahili | swh-000 | -a kidhalimu |
| Kiswahili | swh-000 | -a kinyama |
| Kiswahili | swh-000 | -a kishupavu |
| Kiswahili | swh-000 | -a kuleta taabu |
| Kiswahili | swh-000 | -a matata |
| Kiswahili | swh-000 | -a mazonge |
| Kiswahili | swh-000 | -a mtataniko |
| Kiswahili | swh-000 | -bishi |
| Kiswahili | swh-000 | -embamba |
| Kiswahili | swh-000 | -enye choyo |
| Kiswahili | swh-000 | -enye matata |
| Kiswahili | swh-000 | -enye usulubu |
| Kiswahili | swh-000 | -halifu |
| Kiswahili | swh-000 | -jeuri |
| Kiswahili | swh-000 | -kaidi |
| Kiswahili | swh-000 | -kali |
| Kiswahili | swh-000 | -katavu |
| Kiswahili | swh-000 | -korofi |
| Kiswahili | swh-000 | -nene |
| Kiswahili | swh-000 | -nyimivu |
| Kiswahili | swh-000 | -onevu |
| Kiswahili | swh-000 | -shupavu |
| Kiswahili | swh-000 | -zito |
| Kiswahili | swh-000 | bahili |
| Kiswahili | swh-000 | hadidi |
| Kiswahili | swh-000 | hiana |
| Kiswahili | swh-000 | imara |
| Kiswahili | swh-000 | jahili |
| Kiswahili | swh-000 | kabidhi |
| Kiswahili | swh-000 | katili |
| Kiswahili | swh-000 | madhubuti |
| Kiswahili | swh-000 | mathubuti |
| Kiswahili | swh-000 | mithaki |
| Kiswahili | swh-000 | si rahisi |
| Kiswahili | swh-000 | tata |
| Kiswahili | swh-000 | thabiti |
| Kiswahili | swh-000 | thakili |
| Kiswahili | swh-000 | tisti |
| Kiswahili | swh-000 | yabis |
| Suba | sxb-000 | kongʼu |
| татарча | tat-001 | дөшвар |
| Takia | tbc-000 | mrwa- |
| Takia | tbc-000 | sakar |
| తెలుగు | tel-000 | కఠినమైన |
| తెలుగు | tel-000 | కష్టమైన |
| Tagalog | tgl-000 | mahirap |
| ภาษาไทย | tha-000 | กล้า |
| ภาษาไทย | tha-000 | มีอุปสรรค |
| ภาษาไทย | tha-000 | ยาก |
| ภาษาไทย | tha-000 | แข็ง |
| phasa thai | tha-001 | khǎeŋ |
| phasa thai | tha-001 | klâa |
| phasa thai | tha-001 | yâak |
| Tharaka | thk-000 | gikiumu |
| Tharaka | thk-000 | kiumu |
| Tooro | ttj-000 | guma |
| Tooro | ttj-000 | kuguma |
| Batsꞌi kꞌop | tzo-000 | tzotz |
| Batsꞌi kꞌop | tzo-000 | vokol |
| українська | ukr-000 | трудний |
| اردو | urd-000 | دشوار |
| اردو | urd-000 | مشکل |
| اردو | urd-000 | کٹھن |
| łéngua vèneta | vec-000 | difissile |
| tiếng Việt | vie-000 | cứng |
| tiếng Việt | vie-000 | khó |
| tiếng Việt | vie-000 | khó khăn |
| Vinza | vin-000 | gumye |
| Vinza | vin-000 | ikigumye |
| Kyivunjo | vun-000 | gyumu |
| Kyivunjo | vun-000 | ngyumu |
| Wanda | wbh-000 | tale |
| Wanji | wbi-000 | alamu |
| Bungu | wun-000 | ikangu |
| Bungu | wun-000 | kangu |
| Wungu | wun-001 | ikangu |
| Wungu | wun-001 | kangu |
| Lusoga | xog-000 | gumu |
| Yao | yao-000 | kulimba |
| Yao | yao-000 | limba |
| Yoem Noki | yaq-000 | namaka |
| Yoem Noki | yaq-000 | obiachi |
| 廣東話 | yue-000 | 困難 |
| 廣東話 | yue-000 | 難 |
| Zinza | zin-000 | egumire |
| Zinza | zin-000 | gumire |
| Zigula | ziw-000 | dala |
| Zigula | ziw-000 | ndala |