| čeština | ces-000 |
| doplňkový | |
| العربية | arb-000 | إضافي |
| PanLem | art-000 | aux |
| беларуская | bel-000 | дадатковы |
| bosanski | bos-000 | dopunski |
| български | bul-000 | добавъчен |
| bălgarski ezik | bul-001 | dobávəčen |
| català | cat-000 | addicional |
| čeština | ces-000 | dodatečný |
| čeština | ces-000 | doplňovací |
| čeština | ces-000 | doplňující |
| čeština | ces-000 | nepovinný |
| čeština | ces-000 | volitelný |
| čeština | ces-000 | výběrový |
| ѩзыкъ словѣньскъ | chu-000 | съпомогатєльнъ |
| slověnĭskŭ językŭ | chu-001 | sŭpomogatelĭnŭ |
| Deutsch | deu-000 | ergänzend |
| Deutsch | deu-000 | komplementär |
| Deutsch | deu-000 | zusätzlich |
| English | eng-000 | additional |
| English | eng-000 | arbitrary |
| English | eng-000 | auxiliary |
| English | eng-000 | complementary |
| English | eng-000 | completing |
| English | eng-000 | optional |
| English | eng-000 | supplementary |
| 𐐀𐑍𐑊𐐮𐑇 | eng-006 | 𐐫𐐿𐑅𐐮𐑊𐐨𐐯𐑉𐐨 |
| Australian English | eng-009 | auxiliary |
| New Zealand English | eng-010 | auxiliary |
| Esperanto | epo-000 | kroma |
| euskara | eus-000 | laguntzaile |
| suomi | fin-000 | avustava |
| français | fra-000 | additionnel |
| français | fra-000 | complémentaire |
| français | fra-000 | supplémentaire |
| Српскохрватски | hbs-000 | допунски |
| Srpskohrvatski | hbs-001 | dopunski |
| italiano | ita-000 | addizionale |
| italiano | ita-000 | aggiuntivo |
| italiano | ita-000 | ausiliare |
| italiano | ita-000 | ausiliario |
| italiano | ita-000 | complementare |
| italiano | ita-000 | completivo |
| italiano | ita-000 | supplementare |
| la lojban. | jbo-000 | jmina |
| 日本語 | jpn-000 | 付属 |
| Nihongo | jpn-001 | fuzoku |
| にほんご | jpn-002 | ふぞく |
| нихонго | jpn-153 | фудзоку |
| македонски | mkd-000 | дополнителни |
| Nederlands | nld-000 | aanvullend |
| Nederlands | nld-000 | arbitrair |
| Nederlands | nld-000 | eigenmachtig |
| bokmål | nob-000 | sekundær |
| polski | pol-000 | dodatkowy |
| português | por-000 | adicional |
| português brasileiro | por-001 | adicional |
| português europeu | por-002 | adicional |
| русский | rus-000 | дополнительный |
| slovenčina | slk-000 | doplnkový |
| slovenščina | slv-000 | dopolnilen |
| español | spa-000 | adicional |
| español | spa-000 | suplementario |
| српски | srp-000 | допунски |
| srpski | srp-001 | dopunski |
| Türkçe | tur-000 | yedek |
| українська | ukr-000 | додатковий |