| łéngua vèneta | vec-000 | 'opà |
| Proto Polynesian | map-001 | *opa |
| Esperanto | epo-000 | -opa |
| Mambwe | mgr-000 | -opa |
| luenga aragonesa | arg-000 | OPA |
| català | cat-000 | OPA |
| English | eng-000 | OPA |
| français | fra-000 | OPA |
| galego | glg-000 | OPA |
| occitan | oci-000 | OPA |
| polski | pol-000 | OPA |
| español | spa-000 | OPA |
| Ethnologue Language Names | art-330 | Opa |
| Somba Siawari | bmu-000 | Opa |
| Deutsch | deu-000 | Opa |
| English | eng-000 | Opa |
| Boroŋ | ksr-000 | Opa |
| Albaamo innaaɬiilka | akz-000 | opa |
| Andoke | ano-000 | opa |
| Denya—Bitieku | anv-003 | opa |
| ISO 639-3 | art-001 | opa |
| Lingwa de Planeta | art-287 | opa |
| filename extensions | art-335 | opa |
| asturianu | ast-000 | opa |
| Ekibena | bez-000 | opa |
| Buli | bzq-000 | opa |
| català | cat-000 | opa |
| chahta anumpa | cho-000 | opa |
| Koasati | cku-000 | opa |
| Cayuvava | cyb-000 | opa |
| Ekari-Larson | ekg-002 | opa |
| Esperanto | epo-000 | opa |
| euskara | eus-000 | opa |
| galego | glg-000 | opa |
| GSB Mangalore | gom-001 | opa |
| avañeʼẽ | gug-000 | opa |
| Chiriguano | gui-000 | opa |
| Gane | gzn-000 | opa |
| hrvatski | hrv-000 | opa |
| bahasa Indonesia | ind-000 | opa |
| italiano | ita-000 | opa |
| Ibatan | ivb-000 | opa |
| ivatanən | ivv-000 | opa |
| Chimakonde | kde-000 | opa |
| Kewa | kew-000 | opa |
| Boroŋ | ksr-000 | opa |
| Kendem | kvm-000 | opa |
| Limburgs | lim-000 | opa |
| lietuvių | lit-000 | opa |
| latviešu | lvs-000 | opa |
| Mayoruna | mcf-000 | opa |
| Kupang Malay | mkn-000 | opa |
| Mansi | mns-007 | opa |
| reo Māori | mri-000 | opa |
| Maranao | mrw-000 | opa |
| Mwera | mwe-000 | opa |
| Nāhuatlahtōlli | nci-000 | opa |
| Nederlands | nld-000 | opa |
| Pangasinan | pag-000 | opa |
| awaete | pak-000 | opa |
| português | por-000 | opa |
| Urin Buliwya | quh-000 | opa |
| Arhintinap runasimin | qus-000 | opa |
| Qusqu qhichwa simi | quz-000 | opa |
| Apurimaqpaq Runasimi | qve-000 | opa |
| Leitre | rwa-001 | opa |
| Me-Wuk | skd-000 | opa |
| Lamaholot Ile Mandiri | slp-000 | opa |
| español | spa-000 | opa |
| castellano de la Argentina | spa-005 | opa |
| castellano boliviano | spa-006 | opa |
| español paisa | spa-027 | opa |
| Suena | sue-000 | opa |
| Yami | tao-000 | opa |
| Toaripi-Motumotu | tqo-000 | opa |
| yesą́ | tta-000 | opa |
| Talossan | tzl-000 | opa |
| Uaripi | uar-000 | opa |
| Umbu-Ungu | ubu-000 | opa |
| oʻzbek | uzn-000 | opa |
| Vanimo | vam-000 | opa |
| Dusur | vam-001 | opa |
| Vlaams | vls-000 | opa |
| Shekgalagari | xkv-000 | opa |
| Yagaria | ygr-000 | opa |
| èdè Yorùbá | yor-000 | opa |
| Maranao | mrw-000 | opaʼ |
| Zapoteco de San Dionisio Ocotepec | ztu-000 | opaʼ |
| lietuvių | lit-000 | opà |
| Kendem | kvm-000 | opá |
| Kekpoti | kvm-001 | opá |
| Lucumí | luq-000 | opá |
| nzd-000 | opá | |
| andaluz | spa-032 | opá |
| Kâte | kmg-000 | opâ |
| èdè Yorùbá | yor-000 | ó pa |
| C’lela | dri-000 | ó:pá |
| Buma | boh-000 | ópa |
| Central Bontok | lbk-000 | ópa |
| Bontoc—Guinaang | lbk-002 | ópa |
| Guina-ang Bontoc (generic orthography) | lbk-009 | ópa |
| kaszëbsczi jãzëk | csb-000 | ôpa |
| ʻōlelo Hawaiʻi | haw-000 | ʻopa |
| ʻōlelo Hawaiʻi | haw-000 | ʻōpā |
| Ghatshila Ho | hoc-001 | ˈoːpa |
| èdè Yorùbá | yor-000 | Ọpa |
| èdè Yorùbá | yor-000 | Ọpá |
| èdè Yorùbá | yor-000 | Ọ̀pá |
| èdè Yorùbá | yor-000 | ọpa |
| èdè Yorùbá | yor-000 | ọ̀pá |
| ISO 639-PanLex | art-274 | opa-000 |
| ISO 639-PanLex | art-274 | opa-001 |
| Silozi | loz-000 | opa1 |
| Silozi | loz-000 | opa2 |
| Bungku | bkz-000 | opaa |
| Kewa | kew-000 | opaa |
| Mori | mzq-000 | opaa |
| Mori Bawah | xmz-000 | opaa |
| èdè Yorùbá | yor-000 | ọ̀pá àbatà |
| èdè Yorùbá | yor-000 | ọ̀pá àbẹ́là |
| èdè Yorùbá | yor-000 | ọ̀pá àbíkú |
| français | fra-000 | OPA à crédit |
| èdè Yorùbá | yor-000 | ọ̀pá àdúrà |
| Suri | ppo-001 | opaae ɸu-lapo |
| èdè Yorùbá | yor-000 | ọ̀pá agbára |
| èdè Yorùbá | yor-000 | ọ̀pá àjà |
| èdè Yorùbá | yor-000 | ọ̀pá ajé |
| Nederlands | nld-000 | opaak |
| Kewa | kew-000 | opaa-kitipi |
| suomi | fin-000 | opaakki |
| eesti | ekk-000 | opaal |
| Nederlands | nld-000 | opaal |
| èdè Yorùbá | yor-000 | ọ̀pààlà-àbùdá-èdè |
| èdè Yorùbá | yor-000 | ọ̀pá aládé |
| Nederlands | nld-000 | opaalglas |
| Nederlands | nld-000 | opaalgroen |
| suomi | fin-000 | opaali |
| suomi | fin-000 | opaali- |
| suomi | fin-000 | opaalilasi |
| suomi | fin-000 | opaalimainen läpikuultavuus |
| suomi | fin-000 | opaalinhohtoinen |
| suomi | fin-000 | opaalinvärinen |
| suomi | fin-000 | opaalirintaneula |
| suomi | fin-000 | opaalisormus |
| Nederlands | nld-000 | opaalmelkbekerzwam |
| teke | teg-000 | opaambulu |
| èdè Yorùbá | yor-000 | ọ̀páa mítà |
| English | eng-000 | opa-amp |
| Limburgs | lim-000 | opaan |
| Nederlands | nld-000 | op aanbeveling van |
| Nederlands | nld-000 | op aandrang van |
| Nederlands | nld-000 | op aanraden van |
| Pele-Ata | ata-000 | opaanu |
| Nederlands | nld-000 | op aanvraag |
| èdè Yorùbá | yor-000 | ó pa á o! |
| Esperanto | epo-000 | opa arestado |
| Deutsch | deu-000 | O. Paarhufer |
| èdè Yorùbá | yor-000 | ọ̀pá aró |
| èdè Yorùbá | yor-000 | ọ̀pá-aró |
| èdè Yorùbá | yor-000 | ọ́pá arọ ọ́pá akésẹ́ |
| èdè Yorùbá | yor-000 | ọ̀pá-àṣẹ |
| èdè Yorùbá | yor-000 | ọ̀pá-àṣẹ ìpidán |
| èdè Yorùbá | yor-000 | ọ̀pá aṣọ |
| èdè Yorùbá | yor-000 | ọ̀páa-tábà |
| Lucumí | luq-000 | opá ataná |
| èdè Yorùbá | yor-000 | ọ̀pá atanná |
| Ocaina | oca-000 | opaavi |
| èdè Yorùbá | yor-000 | òpá-àwọ̀nfunfun |
| èdè Yorùbá | yor-000 | ọ̀pá-àwọ̀n funfun |
| èdè Yorùbá | yor-000 | ọ̀pá-àwọ̀nfunfun |
| Tupinambá | tpn-000 | opab |
| Lori | bnt-002 | opáːb |
| Ocaina | oca-000 | opabi |
| català | cat-000 | Opabinia |
| Deutsch | deu-000 | Opabinia |
| English | eng-000 | Opabinia |
| euskara | eus-000 | Opabinia |
| français | fra-000 | Opabinia |
| Nederlands | nld-000 | Opabinia |
| polski | pol-000 | Opabinia |
| español | spa-000 | Opabinia |
| svenska | swe-000 | Opabinia |
| Volapük | vol-000 | Opabinia |
| português | por-000 | Opabínia |
| èdè Yorùbá | yor-000 | Ọ̀pábìyìí |
| èdè Yorùbá | yor-000 | ó pa bóró |
| íslenska | isl-000 | op á byrðingi |
| 普通话 | cmn-000 | OPAC |
| 國語 | cmn-001 | OPAC |
| eesti | ekk-000 | OPAC |
| English | eng-000 | OPAC |
| italiano | ita-000 | OPAC |
| 日本語 | jpn-000 | OPAC |
| español | spa-000 | OPAC |
| Nederlands | nld-000 | Opac |
| Sambahsa-mundialect | art-288 | opac |
| català | cat-000 | opac |
| Interlingue | ile-000 | opac |
| interlingua | ina-000 | opac |
| Kâte | kmg-000 | opac |
| română | ron-000 | opac |
| Talossan | tzl-000 | opac |
| italiano | ita-000 | opaca |
| Lingua Franca Nova | lfn-000 | opaca |
| español | spa-000 | opaca |
| castellano de la Argentina | spa-005 | opacada |
| italiano | ita-000 | opaca di area |
| español | spa-000 | opacado |
| Rukai | dru-000 | opacai |
| luenga aragonesa | arg-000 | opacament |
| català | cat-000 | opacament |
| galego | glg-000 | opacamente |
| português | por-000 | opacamente |
| português brasileiro | por-001 | opacamente |
| português europeu | por-002 | opacamente |
| español | spa-000 | opacamente |
| español | spa-000 | opacar |
| castellano de la Argentina | spa-005 | opacar |
| hiMxI | hin-004 | OpacArika |
| hiMxI | hin-004 | OpacArikawA |
| español | spa-000 | opacarse |
| Cayuvava | cyb-000 | opače |
| English | eng-000 | Opaceta |
| polski | pol-000 | opacha |
| Cofán | con-000 | opac̷ʰe kãʔhẽɲe |
| italiano | ita-000 | opachi |
| polski | pol-000 | opaci |
| asturianu | ast-000 | opacidá |
| español | spa-000 | opacidad |
| galego | glg-000 | opacidade |
| português | por-000 | opacidade |
| português brasileiro | por-001 | opacidade |
| português europeu | por-002 | opacidade |
| luenga aragonesa | arg-000 | opacidat |
| galego | glg-000 | O paciente inglés |
| français | fra-000 | opacifiant |
| English | eng-000 | opacification |
| français | fra-000 | opacification |
| Universal Networking Language | art-253 | opacification(icl>natural_process>thing) |
| English | eng-000 | opacified |
| English | eng-000 | opacified enamel |
| English | eng-000 | opacified glass |
| English | eng-000 | opacified glaze |
| English | eng-000 | opacifier |
| français | fra-000 | opacifier |
| español | spa-000 | opacifier |
| English | eng-000 | opacifier-meter |
| langue picarde | pcd-000 | opacifieu |
| English | eng-000 | opacify |
| Universal Networking Language | art-253 | opacify(icl>change>do,agt>thing,obj>thing) |
| Universal Networking Language | art-253 | opacify(icl>change>occur,obj>thing) |
| English | eng-000 | opacifying |
| English | eng-000 | opacifying agent |
| English | eng-000 | opacifying effect |
| English | eng-000 | opacifying gallstone |
| English | eng-000 | opacifying injection |
| English | eng-000 | opacifying power |
| English | eng-000 | opacimeter |
| čeština | ces-000 | opacimetr |
| français | fra-000 | opacimétrie |
| italiano | ita-000 | opacimetro |
| English | eng-000 | opacimetry |
| hrvatski | hrv-000 | opačina |
| čeština | ces-000 | opacita |
| italiano | ita-000 | opacita |
| slovenčina | slk-000 | opacita |
| italiano | ita-000 | opacità |
| Interlingue | ile-000 | opacitá |
| Malti | mlt-000 | opaċità |
| italiano | ita-000 | opacita di Kramers |
| italiano | ita-000 | opacità di Kramers |
| italiano | ita-000 | opacita di Rosseland |
| italiano | ita-000 | opacità di Rosseland |
| English | eng-000 | opacitas |
| latine | lat-000 | opacitas |
| català | cat-000 | opacitat |
| occitan | oci-000 | opacitat |
| interlingua | ina-000 | opacitate |
| română | ron-000 | opacitate |
| English | eng-000 | opacite |
| français | fra-000 | opacite |
| français | fra-000 | opacité |
| français | fra-000 | opacite de Kramers |
| français | fra-000 | opacite de Rosseland |
| English | eng-000 | opacite margin |
| svenska | swe-000 | opacitet |
| langue picarde | pcd-000 | opaciteû |
| English | eng-000 | opacities |
| Universal Networking Language | art-253 | opacity |
| English | eng-000 | opacity |
| English | eng-000 | opacity barrier |
| English | eng-000 | opacity coefficient |
| English | eng-000 | opacity darkness |
| Universal Networking Language | art-253 | opacity(icl>incomprehensibility>thing) |
| Universal Networking Language | art-253 | opacity(icl>physical_phenomenon>thing,ant>transparency) |
| Universal Networking Language | art-253 | opacity(icl>quality>thing,ant>clarity) |
| Universal Networking Language | art-253 | opacity(icl>technical) |
| English | eng-000 | opacity meter |
| English | eng-000 | opacity of enamel |
| English | eng-000 | opacity of paper |
| English | eng-000 | opacity of smoke |
| English | eng-000 | opacity of the cornea |
| English | eng-000 | opacity outlining the whole of the left lower lobe |
| English | eng-000 | opacity paper |
| English | eng-000 | opacity signal |
| English | eng-000 | opacity to sound |
| italiano | ita-000 | opacizzante |
| italiano | ita-000 | opacizzare |
| italiano | ita-000 | opacizzazione |
| italiano | ita-000 | opacizzazióne |
| polski | pol-000 | opacki |
| čeština | ces-000 | opačná |
| slovenčina | slk-000 | opačná |
| čeština | ces-000 | opačná fáze |
| slovenčina | slk-000 | opačná lomka |
| slovenčina | slk-000 | opačne |
| čeština | ces-000 | opačné |
| hanácké | ces-002 | opačné |
| slovenčina | slk-000 | opačné |
| čeština | ces-000 | opačně |
| čeština | ces-000 | opačné číslo |
| čeština | ces-000 | opačného mínění |
| čeština | ces-000 | opačného názoru |
| čeština | ces-000 | opačné pohlaví |
| slovenčina | slk-000 | opačné pohlavie |
| čeština | ces-000 | opačné působení |
| čeština | ces-000 | opačně působící činitel |
| čeština | ces-000 | opačnost |
| slovenčina | slk-000 | opačnosť |
| čeština | ces-000 | opačný |
| slovenčina | slk-000 | opačný |
| čeština | ces-000 | opačný azimut |
| čeština | ces-000 | opačný jev |
| čeština | ces-000 | opačný návrh |
| čeština | ces-000 | opačný pól |
| čeština | ces-000 | opačný proud |
| čeština | ces-000 | opačný rozkaz |