| English | eng-000 | OPTAR |
| asturianu | ast-000 | optar |
| català | cat-000 | optar |
| English | eng-000 | optar |
| galego | glg-000 | optar |
| Interlingue | ile-000 | optar |
| interlingua | ina-000 | optar |
| norskr | non-000 | optar |
| occitan | oci-000 | optar |
| português | por-000 | optar |
| português brasileiro | por-001 | optar |
| português europeu | por-002 | optar |
| română | ron-000 | optar |
| español | spa-000 | optar |
| português | por-000 | optar activamente por não participar |
| português | por-000 | optar activamente por participar |
| English | eng-000 | Optare |
| italiano | ita-000 | optare |
| latine | lat-000 | optare |
| latine | lat-000 | optāre |
| italiano | ita-000 | optare per |
| Talossan | tzl-000 | optarh |
| português | por-000 | optar por |
| español | spa-000 | optar por la clemencia |
| português | por-000 | optar por não fazer algo |
| español | spa-000 | optar por no hacerlo |
| español | spa-000 | optar por no recibir |
| interlingua | ina-000 | optar pro |
| Limburgs | lim-000 | optaste |
| English | eng-000 | Optatam Totius |
| italiano | ita-000 | Optatam Totius |
| slovenčina | slk-000 | Optatam Totius |
| Afrikaans | afr-000 | optatief |
| Nederlands | nld-000 | optatief |
| français | fra-000 | optatif |
| langue picarde | pcd-000 | optatîf |
| suomi | fin-000 | optatiivi |
| suomi | fin-000 | optatiivi- |
| suomi | fin-000 | optatiivinen |
| latine | lat-000 | optatio |
| català | cat-000 | optatiu |
| occitan | oci-000 | optatiu |
| Talossan | tzl-000 | optatíu |
| Deutsch | deu-000 | Optativ |
| čeština | ces-000 | optativ |
| dansk | dan-000 | optativ |
| Deutsch | deu-000 | optativ |
| suomi | fin-000 | optativ |
| nynorsk | nno-000 | optativ |
| bokmål | nob-000 | optativ |
| lingua rumantscha | roh-000 | optativ |
| svenska | swe-000 | optativ |
| español | spa-000 | optativa |
| luenga aragonesa | arg-000 | optativament |
| català | cat-000 | optativament |
| galego | glg-000 | optativamente |
| português | por-000 | optativamente |
| português brasileiro | por-001 | optativamente |
| português europeu | por-002 | optativamente |
| español | spa-000 | optativamente |
| Sambahsa-mundialect | art-288 | optative |
| English | eng-000 | optative |
| Interlingue | ile-000 | optative |
| interlingua | ina-000 | optative |
| Universal Networking Language | art-253 | optative(icl>adj,com>optative_mood) |
| Universal Networking Language | art-253 | optative(icl>adj,com>option) |
| Universal Networking Language | art-253 | optative(icl>mood>thing,equ>optative_mood) |
| GOLD 2010 | art-303 | OptativeMood |
| ISO 12620 | art-317 | OptativeMood |
| English | eng-000 | optative mood |
| English | eng-000 | optative[noun] |
| English | eng-000 | optative particle |
| English | eng-000 | optative sentence |
| English | eng-000 | optative verb |
| español | spa-000 | optatividad |
| português | por-000 | optatividade |
| català | cat-000 | optativitat |
| français | fra-000 | optativité |
| hrvatski | hrv-000 | optativni |
| čeština | ces-000 | optativní |
| luenga aragonesa | arg-000 | optativo |
| Esperanto | epo-000 | optativo |
| galego | glg-000 | optativo |
| Ido | ido-000 | optativo |
| português | por-000 | optativo |
| español | spa-000 | optativo |
| svenska | swe-000 | optativsats |
| asturianu | ast-000 | optativu |
| magyar | hun-000 | optativus |
| latine | lat-000 | optativus |
| polski | pol-000 | optativus |
| čeština | ces-000 | optat se |
| latine | lat-000 | optatus |
| Plattdüütsch | nds-000 | op’t best |
| English | eng-000 | OptControlCentre Model File |
| TechTarget file types | art-336 | OPT-Developer-Studio-file-Microsoft |
| limba armãneascã | rup-000 | optdzãtsi |
| Bagirmi | bmi-000 | opte |
| Shiwiʼma | zun-000 | opte |
| English | eng-000 | opted |
| Universal Networking Language | art-253 | opted-out(icl>state) |
| Nederlands | nld-000 | op tegenstand stuiten |
| dansk | dan-000 | optegne |
| dansk | dan-000 | optegnelse |
| dansk | dan-000 | Optegnelser fra et kælderdyb |
| Cymraeg | cym-000 | optegydd |
| Limburgs | lim-000 | opteikene |
| yidish | ydd-001 | optejln |
| brezhoneg | bre-000 | optek |
| Afrikaans | afr-000 | opteken |
| Nederlands | nld-000 | optekenboekje |
| Nederlands | nld-000 | optekenen |
| Nederlands | nld-000 | Optekeningen over de riten |
| Afrikaans | afr-000 | optel |
| Afrikaans | afr-000 | optelhond |
| Afrikaans | afr-000 | optelkind |
| Limburgs | lim-000 | optèlle |
| Nederlands | nld-000 | optellen |
| Afrikaans | afr-000 | optelling |
| Nederlands | nld-000 | optelling |
| Nederlands | nld-000 | optellingsoperator |
| Nederlands | nld-000 | optelsom |
| Limburgs | lim-000 | optemis |
| Limburgs | lim-000 | optemismós |
| Limburgs | lim-000 | optemistis |
| langue picarde | pcd-000 | optempèreu |
| Achterhoeks | act-000 | op-t ende |
| Papiamentu | pap-000 | optene |
| Papiamentu | pap-000 | optené |
| français | fra-000 | Optenet |
| español | spa-000 | Optenet |
| Papiamentu | pap-000 | optenibel |
| English | eng-000 | Opte Project |
| français | fra-000 | opter |
| français | fra-000 | opter de |
| dansk | dan-000 | optere |
| nynorsk | nno-000 | optere |
| bokmål | nob-000 | optere |
| hrvatski | hrv-000 | opterećen |
| hrvatski | hrv-000 | opterećena strana kugle |
| hrvatski | hrv-000 | opterećene |
| hrvatski | hrv-000 | opterećenja |
| hrvatski | hrv-000 | opterećenje |
| hrvatski | hrv-000 | opterećenje grbine |
| hrvatski | hrv-000 | opterećenje kuke |
| hrvatski | hrv-000 | opterećenjem |
| hrvatski | hrv-000 | opterećenje motora |
| hrvatski | hrv-000 | opterećenje pri dnu |
| hrvatski | hrv-000 | opterećenje tla |
| hrvatski | hrv-000 | opterećen malom strujom |
| hrvatski | hrv-000 | opterećen obveznicama |
| hrvatski | hrv-000 | opterećenost |
| hrvatski | hrv-000 | opterećen pri dnu |
| hrvatski | hrv-000 | opterećivati |
| hrvatski | hrv-000 | opterećujući |
| Nederlands | nld-000 | opteren |
| davvisámegiella | sme-000 | opteret |
| Srpskohrvatski | hbs-001 | opteretiti |
| hrvatski | hrv-000 | opteretiti |
| srpski | srp-001 | opteretiti |
| bosanski | bos-000 | opteretiti balastom |
| hrvatski | hrv-000 | opteretivo |
| hrvatski | hrv-000 | Opteretivost |
| hrvatski | hrv-000 | opteretna cijev |
| hrvatski | hrv-000 | opteretni namet |
| julevsámegiella | smj-000 | opterit |
| Nederlands | nld-000 | op termijn |
| català | cat-000 | Opteron |
| čeština | ces-000 | Opteron |
| 普通话 | cmn-000 | Opteron |
| 國語 | cmn-001 | Opteron |
| dansk | dan-000 | Opteron |
| English | eng-000 | Opteron |
| français | fra-000 | Opteron |
| magyar | hun-000 | Opteron |
| italiano | ita-000 | Opteron |
| 日本語 | jpn-000 | Opteron |
| Nederlands | nld-000 | Opteron |
| polski | pol-000 | Opteron |
| português | por-000 | Opteron |
| русский | rus-000 | Opteron |
| slovenčina | slk-000 | Opteron |
| svenska | swe-000 | Opteron |
| Türkçe | tur-000 | Opteron |
| українська | ukr-000 | Opteron |
| français | fra-000 | opter pour |
| Lëtzebuergesch | ltz-000 | optesch Illusioun |
| English | eng-000 | optesthesia |
| langue picarde | pcd-000 | opteu |
| Limburgs | lim-000 | opteute |
| Mombum | mso-000 | öptexan |
| yidish | ydd-001 | opteyl |
| yidish | ydd-001 | opteyln |
| yidish | ydd-001 | opteylung |
| English | eng-000 | Optez |
| suomi | fin-000 | Optez |
| español | spa-000 | optez |
| English | eng-000 | opt for |
| Universal Networking Language | art-253 | opt for(icl>choose) |
| English | eng-000 | opthalmectomy |
| English | eng-000 | opthalmia |
| español | spa-000 | opthalmia de gonorrheal |
| Universal Networking Language | art-253 | opthalmic |
| English | eng-000 | opthalmic |
| English | eng-000 | opthalmitis |
| English | eng-000 | opthalmological |
| Deutsch | deu-000 | opthalmologisch |
| English | eng-000 | opthalmologist |
| English | eng-000 | opthalmology |
| English | eng-000 | opthalmoplegia |
| English | eng-000 | opthalmoscope |
| English | eng-000 | opthalmoscopy |
| English | eng-000 | opthalmus |
| Nederlands | nld-000 | op theorie gebaseerd |
| Brithenig | bzt-000 | opthiwn |
| 普通话 | cmn-000 | OPTi |
| 國語 | cmn-001 | OPTi |
| Deutsch | deu-000 | Opti |
| Budinos | fiu-001 | opti |
| Glosa | igs-001 | opti |
| English | eng-000 | Optibus |
| English | eng-000 | Optic |
| Universal Networking Language | art-253 | optic |
| English | eng-000 | optic |
| Interlingue | ile-000 | optic |
| interlingua | ina-000 | optic |
| occitan | oci-000 | optic |
| română | ron-000 | optic |
| Talossan | tzl-000 | optic |
| català | cat-000 | òptic |
| luenga aragonesa | arg-000 | optica |
| interlingua | ina-000 | optica |
| latine | lat-000 | optica |
| Nederlands | nld-000 | optica |
| occitan | oci-000 | optica |
| português | por-000 | optica |
| español | spa-000 | optica |
| română | ron-000 | optică |
| português | por-000 | Óptica |
| català | cat-000 | òptic -a |
| català | cat-000 | òptica |
| asturianu | ast-000 | óptica |
| galego | glg-000 | óptica |
| português | por-000 | óptica |
| español | spa-000 | óptica |
| español | spa-000 | óptica acústica |
| English | eng-000 | optica axis |
| español | spa-000 | optica de fasciculitis |
| español | spa-000 | optica de neuritis |
| español | spa-000 | optica de neuromyelitis |
| español | spa-000 | optica de papillitis |
| español | spa-000 | optica de pseudoneuritis |
| latine | lat-000 | opticae |
| bosanski | bos-000 | opticaj |
| hrvatski | hrv-000 | opticaj |
| srpski | srp-001 | opticaj |
| hrvatski | hrv-000 | opticaj sredstava |
| Universal Networking Language | art-253 | optical |
| English | eng-000 | optical |
| Talossan | tzl-000 | optical |
| English | eng-000 | Optical 50um |
| English | eng-000 | Optical 62.5um |
| English | eng-000 | Optical 9um |
| Universal Networking Language | art-253 | optical aberration |
| English | eng-000 | optical aberration |
| English | eng-000 | optical absorption |
| English | eng-000 | optical absorption band |
| English | eng-000 | optical absorption edge |
| English | eng-000 | optical-absorption edge |
| English | eng-000 | optical absorption spectroscopy |
| English | eng-000 | optical accelerometer |
| English | eng-000 | optical access coupler |
| English | eng-000 | optical accessory |
| English | eng-000 | optical achromatism |
| English | eng-000 | optical-acoustic |
| English | eng-000 | optical acoustic diffraction |
| English | eng-000 | optical-acoustic diffraction |
| English | eng-000 | optical-acoustic gas analyzer |
| English | eng-000 | optical-acoustic light diffraction |
| English | eng-000 | optical acquisition |
| English | eng-000 | optical acquisition equipment |
| English | eng-000 | optical activation |
| English | eng-000 | optical activator |
| English | eng-000 | optical active initiator |
| English | eng-000 | optical active phonon |
| English | eng-000 | optical active polymer |
| English | eng-000 | optical active substance |
| English | eng-000 | optical activity |
| English | eng-000 | optical activity of oil |
| English | eng-000 | optical adaptive technique |
| English | eng-000 | optical add - drop multiplexer |
| English | eng-000 | optical addressing |
| English | eng-000 | optical adhesive |
| English | eng-000 | optical admittance |
| English | eng-000 | optical agnosia |
| English | eng-000 | optical aid |
| English | eng-000 | optical aids |
| English | eng-000 | optical air mass |