| Nihongo | jpn-001 |
| konnan | |
| aršatten č’at | aqc-000 | balatːut |
| العربية | arb-000 | صعب |
| Mapudungun | arn-000 | küzawngelu |
| PanLem | art-000 | dif |
| LWT Code | art-257 | 17.47 |
| беларуская | bel-000 | цяжкі |
| bosanski | bos-000 | težak |
| български | bul-000 | труден |
| bălgarski ezik | bul-001 | trúden |
| Kaliʼna | car-000 | tupime |
| català | cat-000 | dificil |
| čeština | ces-000 | obtížný |
| ѩзыкъ словѣньскъ | chu-000 | тѧжкъ |
| slověnĭskŭ językŭ | chu-001 | tęžkŭ |
| 普通话 | cmn-000 | 难 |
| Hànyǔ | cmn-003 | nan2 |
| seselwa | crs-000 | difisil |
| Cheʼ Wong | cwg-000 | payɑh |
| Cheʼ Wong | cwg-000 | susɑh |
| Deutsch | deu-000 | Bedrängnis |
| Deutsch | deu-000 | Leid |
| Deutsch | deu-000 | Mühe |
| Deutsch | deu-000 | Not |
| Deutsch | deu-000 | Problem |
| Deutsch | deu-000 | Schwierigkeit |
| Deutsch | deu-000 | Verlegenheit |
| Deutsch | deu-000 | schwierig |
| dolnoserbska reč | dsb-000 | śěžki |
| English | eng-000 | difficult |
| English | eng-000 | difficulty |
| English | eng-000 | distress |
| 𐐀𐑍𐑊𐐮𐑇 | eng-006 | 𐐼𐐮𐑁𐐮𐐿𐐲𐑊𐐻 |
| Australian English | eng-009 | difficult |
| New Zealand English | eng-010 | difficult |
| Esperanto | epo-000 | malfacila |
| euskara | eus-000 | zail |
| suomi | fin-000 | vaikeus |
| français | fra-000 | difficile |
| diutisk | goh-000 | unsemfti |
| Gawwada—Dalpena | gwd-000 | rakko |
| Hausa | hau-000 | mài wùyáa |
| ʻōlelo Hawaiʻi | haw-000 | paʻakīkī |
| Српскохрватски | hbs-000 | тежак |
| Srpskohrvatski | hbs-001 | težak |
| עברית | heb-000 | ד.א.ר. |
| עברית | heb-000 | דיאך |
| עברית | heb-000 | דיקאנס |
| עברית | heb-000 | התנגדות |
| עברית | heb-000 | זמן קשה |
| עברית | heb-000 | כסוס |
| עברית | heb-000 | מים חמים |
| עברית | heb-000 | מכריע |
| עברית | heb-000 | משוכה |
| עברית | heb-000 | נחות |
| עברית | heb-000 | עמול |
| עברית | heb-000 | עמוק |
| עברית | heb-000 | קושי |
| עברית | heb-000 | קנוטאד |
| עברית | heb-000 | קשה |
| עברית | heb-000 | שעיר |
| bahasa Indonesia | ind-000 | sukar |
| bahasa Indonesia | ind-000 | sulit |
| bahasa Indonesia | ind-000 | susah |
| Iraqw | irk-000 | gawid |
| italiano | ita-000 | difficile |
| la lojban. | jbo-000 | nandu |
| 日本語 | jpn-000 | 困難 |
| 日本語 | jpn-000 | 難しい |
| Nihongo | jpn-001 | muzukashii |
| にほんご | jpn-002 | こんなん |
| нихонго | jpn-153 | коннан |
| Jupda | jup-000 | hamhũynɨ́h |
| bežƛʼalas mic | kap-001 | -äqʼqʼö |
| bežƛʼalas mic | kap-001 | zahmatab |
| Q’eqchi’ | kek-000 | ch'a'aj |
| Ket | ket-000 | səə |
| Kanuri | knc-000 | jâu |
| македонски | mkd-000 | тешки |
| Hmoob Dawb | mww-000 | nyuab |
| Hmoob Dawb | mww-000 | nyuaj |
| Wichí Lhamtés Güisnay | mzh-000 | atha |
| Nederlands | nld-000 | moeilijk |
| Manang | nmm-000 | 4kole-1kʰʌ |
| bokmål | nob-000 | vanskelig |
| Orochon | orh-000 | mani |
| Hñähñu | ote-000 | xi hñei |
| Hñähñu | ote-000 | xi hñembi |
| fiteny Malagasy | plt-000 | sàrotra |
| polski | pol-000 | trudny |
| português | por-000 | difícil |
| português brasileiro | por-001 | difícil |
| português europeu | por-002 | difícil |
| Impapura | qvi-000 | sinchi |
| Riff | rif-000 | qsəħ |
| Riff | rif-000 | wʕāʼ |
| Selice Romani | rmc-002 | pháro |
| română | ron-000 | dificil |
| română | ron-000 | greu |
| русский | rus-000 | трудный |
| Saxa tyla | sah-001 | ɨaraχan |
| Кӣллт са̄мь кӣлл | sjd-000 | рэ̄ссесь |
| slovenčina | slk-000 | obtiažny |
| slovenščina | slv-000 | težek |
| español | spa-000 | apuro |
| español | spa-000 | dificultad |
| español | spa-000 | difícil |
| español | spa-000 | problema |
| Saamáka | srm-000 | taánga |
| српски | srp-000 | тежак |
| srpski | srp-001 | težak |
| Kiswahili | swh-000 | -gumu |
| Takia | tbc-000 | mrwa- |
| ภาษาไทย | tha-000 | ยาก |
| phasa thai | tha-001 | yâak |
| Türkçe | tur-000 | güç |
| Türkçe | tur-000 | sıkıntı |
| Batsꞌi kꞌop | tzo-000 | vokol |
| українська | ukr-000 | важкий |
| tiếng Việt | vie-000 | khó |
| Yoem Noki | yaq-000 | obiachi |