Deka Oficiala Aldono (10OA): the 420 official roots
All 420 roots made official by Deka Oficiala Aldono (10OA) (2023), alphabetically, with their meaning in English and a link to each dictionary entry.
- Acor- Azores
- Adelajd- Adelaide
- Aden- Aden
- Adriatik- Adriatic Sea
- afgan- an Afghan person
- Akad- Akkad
- Alask- Alaska
- Aleksandri- Alexandria
- Alzac- Alsace
- Amazon- Amazon
- Amsterdam- Amsterdam
- And- Andes
- Andor- Andorra
- Angol- Angola
- Antigv- Antigua
- Antil- Antilles
- Antverpen- Antwerp
- Apolon- Apollo
- Argentin- Argentina
- Asiri- Assyria
- Aten- Athens
- Aŭgsburg- Augsburg
- aŭstr- Austrian
- Aŭstronezi- austronesian
- Azerbajĝan- Azerbaijan
- aztek- Aztec
- Babilon- Babylon
- Bagdad- Bagdad
- Baham- the Bahamas
- Balkan- Balkan
- balt- Baltic
- Bangladeŝ- Bangladesh
- Bankok- Bangkok
- bantu- Bantu
- Barat- India
- Barbad- Barbados
- Barbud- Barbuda
- Barcelon- Barcelona
- Barejn- Bahrain
- baŝkir- Bashkir
- bavar- Bavarian
- Belfast- Belfast
- Beliz- Belize
- belorus- Belarusian
- bengal- Bengali
- Benin- Benin
- Beograd- Belgrade
- Bergen- Bergen
- Bern- Bern
- Bisaŭ- Bissau
- Bizanc- Byzantium
- Bjalistok- Białystok
- Bocvan- Botswana
- Bogot- Bogotá
- bohem- Bohemian
- Bolonj-
- Borne- Borneo
- bosn- Bosnian
- Bospor- Bosphorus
- Boston- Boston
- Brajton- Brighton
- Bratislav- Bratislava
- Brazavil- Brazzaville
- Brazilj- Brasília
- breton- breton
- Brunej- Brunei
- Brusel- Brussels
- Budapeŝt- Budapest
- Bukareŝt- Bucharest
- Burkin- Burkina Faso
- Burund- Burundi
- Butan- Bhutan
- Cezar- Caesar
- Ĉad- Chad
- ĉeĉen- Chechen
- ĉeĥ- Czech
- Ĉenaj-
- Ĉikag- Chicago
- Ĉili- Chile
- ĉuvaŝ- Chuvash
- Dak- Dhaka
- Dalas- Dallas
- Damask- damask
- Dancig- Gdańsk
- Danub- Danube River
- Delhi- Delhi
- Dominik- Dominic
- dravid- Dravidian
- Dresden- Dresden
- Dublin- Dublin
- Edinburg- Edinburgh
- Ege- extremely
- egipt- Egyptian
- Elam-
- emir- emir
- era- era
- Eritre- Eritrea
- etrusk- Etruscan
- Eŭfrat- Euphrates
- eŭsk- Basque
- fenic- Phoenician
- Fiĝi- Fiji
- Filadelfi- Philadelphia
- Filipin- Philippine
- filiŝt- Philistine
- finn- Finn
- flandr- Flemish
- Florenc- Florence
- Florid- Florida
- Fortalez- Fortaleza
- Frankfurt- Frankfurt
- Friul-
- Gabon- Gabon
- gael- gaelic
- galeg- Galician
- Galici- Galicia
- Galile- Galilee
- Gambi- Gambia
- Gana- Ghana
- Gang- Ganges
- gaŭl- Gaul
- Gdansk- Gdansk
- got- Goth
- Gotenburg- Gothenburg
- Gregori- Gregorian
- Grenad- grenade
- Grenadin-
- Grizon-
- Gronland- Greenland
- guĝarat- Gujarati
- Gujan- Guyana
- Gvadelup- Guadeloupe
- Ĝakart- Djakarta
- Ĝenev- Geneva
- ĝerman- ancient German
- Ĝibraltar- Gibraltar
- Ĝibuti- Djibouti
- Hag- The Hague
- Haiti- Haiti
- Hamburg- Hamburg
- Hanoj- Hanoi
- Havaj- Hawaii
- Havan- Havana
- Helsink- Helsinki
- Hercegovin- Herzegovina
- Himalaj- Himalayas
- hind- an inhabitant of British India
- Hindi- India
- hindu- hindu
- Hiroŝim- Hiroshima
- Holand- Holland
- Hondur- Honduras
- Honkong- Hong Kong
- Honŝu-
- hun- hun
- ĥalde- Chaldean
- iber- Iberian people
- Indonezi- Indonesia
- Indus- Indus river
- inka- Inca
- inuit- Inuit
- islam- islam
- Istanbul- Istanbul
- Jamajk- Jamaica
- Jav- Java
- Jemen- Yemen
- Jerusalem- Jerusalem
- Jokoham- Yokohama
- Jordan- Jordan River
- Jordani- Jordan
- Jork- York
- jorub- Yoruba
- jugoslav- Yugoslav
- Juli- July
- Kaboverd- Cape Verde
- Kair- Cairo
- kajman- caiman
- Kaliforni- California
- Kamboĝ- Cambodia
- Kamerun- Cameroon
- Kanton- canton
- Karaĉi- Karachi
- karib- Caribbean
- Karpat-
- kartvel- Georgian
- Kaspi-
- Kaŝmir- Kashmir
- katalun- a Catalan
- Katar- Qatar
- Katmand- Kathmandu
- Kaŭkaz- Caucasus
- Kaŭkazi- Caucasus
- kazaĥ- kazakh
- Kebek- Quebec
- Kebeki- Quebec
- kelt- Celt
- Kembriĝ- Cambridge
- Kenj- Kenya
- kimr- Welshman
- Kinŝas- Kinshasa
- Kiot- Kyoto
- Kipr- Cyprus
- kirgiz- Kyrgyz
- Kiribat- Kiribati
- Kolkat-
- Kolombi- Colombia
- Kolonj- Cologne
- Kolorad- Colorado
- Kolumb- Columbus
- Komor- Comoros
- Kong- Congo
- Konstantinopol- Constantinople
- Kopenhag- Copenhagen
- kore- chorea
- Kornval- Cornwall
- Korsik- Corsica
- Kosov- Kosovo
- Krakov- Kraków
- Krime- Crimea
- Kristofor- Christopher
- kroat- Croat, Croatian
- kurd- Kurd
- Kuvajt- Kuwait
- Lagos- Lagos
- Laos- Laos
- Latin- Latin
- Lesb- lesbian
- Lesot- Lesotho
- Liĥtenŝtejn- Liechtenstein
- Lill- Lille
- Lisbon- Lisbon
- litov- Lithuanian
- Loren- Lorraine
- Losanĝeles- Los Angeles
- Lucern- Lucerne
- Luci-
- Luksemburg- Luxemburg
- Madagaskar- Madagascar
- Madrid- Madrid
- maja- Maya
- Majenc- Mainz
- Majn- Maine
- Majot- Mayotte
- makedon- Macedonian
- malaj- Malay
- Malajzi- Malaysia
- Malavi- Malawi
- Maldiv- Maldives
- Mali- Mali
- Malt- Malta
- Manil- Manila
- maraton- marathon
- Maraton- marathon
- Marsejl- Marseille
- Marŝal- marshal
- Martinik- Martinique
- maŭr- Moor
- Maŭrici- Mauritius
- Maŭritani- Mauritania
- Melanezi- Melanesia
- Mezopotami- Mesopotamia
- Mikronezi- Micronesia
- Milan- Milan
- moldav- Moldavian
- Monak- Monaco
- mongol- Mongolian
- Montenegr- Montenegro
- Montevide- Montevideo
- Montpelier- Montpellier
- Montreal- Montreal
- Moravi-
- Moskv- Moscow
- Mozambik- Mozambique
- Mumbaj- Mumbai
- Munken- Munich
- Nagasak- Nagasaki
- Namibi- Namibia
- Napol- Naples
- Naur- Nauru
- Nepal- Nepal
- Nevis- Nevis
- Niĝer- Niger
- Niĝeri- Nigeria
- Nil- Nile
- Nurenberg- Nuremberg
- Oceani- Oceania
- Odes- Odessa
- Odr-
- okcitan- occitan
- Okinav- Okinawa
- Oksford- Oxford
- Olimp- Olympus
- Olimpi- Olympian
- Oman- Oman
- Osak- Osaka
- Osl- Oslo
- otoman- Ottoman
- Palaŭ- Palau
- Palestin- Palestine
- Papu- Papuan
- Parnas-
- Pekin- Beijing
- Pensilvani- Pennsylvania
- pers- Persian
- Peterburg- Saint-Petersburg
- Pirene- the Pyrenees
- portugal- Portuguese
- Prag- Prague
- Principe- Príncipe
- prus- Prussian
- Raŭm- Rauma
- Rejkjavik- Reykjavík
- Rejn- Rhine
- Reuni- Réunion
- Riodeĵanejr- Rio de Janeiro
- Rom- Rome
- romanĉ- romansch
- Roterdam- Rotterdam
- Ruand- Rwanda
- Sahar- Sahara
- saks- Saxon
- Salomon- Solomon
- Salvador- El Salvador
- Samarkand- Samarkand
- Samo- Samoa
- Sanfrancisk- San Francisco
- Sanmarin- San Marino
- Sanpaŭl- São Paulo
- Sanskrit- Sanskrit
- Santiag- Santiago
- Santome- São Tomé
- Sapf- Sappho
- Sarajev- Sarajevo
- sargas-
- Saud-
- Sejŝel- Seychelles
- Senegal- Senegal
- serb- Serbian
- Seul- Seoul
- Siberi- Siberia
- Sicili- Sicily
- Sieraleon- Sierra Leone
- Silezi- Silesia
- Singapur- Singapore
- skandinav- Scandinavian
- skot- Scot
- slav- Slav
- slovak- Slovak
- sloven- Slovene
- Sofi- Sofia
- somal- Somali
- sovet- soviet
- Soveti- USSR
- Srilank- Sri Lanka
- status- status (position
- Stokholm- Stockholm
- Strasburg- Strasbourg
- Sumatr- Sumatra
- Sumeri- Sumer
- Surinam- Suriname
- suveren- sovereign
- svazi- Swazi
- svis- Swiss
- Ŝanhaj- Shanghai
- Ŝem- Semite
- Ŝetland- Shetlandic
- taĝik- Tajik
- taj- Thai
- Tajvan- Taiwan
- tamil- Tamil
- Tamiz- Thames
- Tampere-
- Tanzani- Tanzania
- Tasmani- Tasmania
- tatar- Tatar
- Teheran- Tehran
- Teksas- Texas
- Telaviv- Tel Aviv
- Tibet- Tibet
- Tigris- Tigris
- Timor- Timor
- tjurk- Turkic
- Tobag- Tobago
- Tog- Lake Togo
- Toki- Tokyo
- Tong- Tonga
- Torin- Turin
- Toront- Toronto
- trak- track
- Trinidad- Trinidad
- turkmen- Turkmen
- Tuval- Tuvalu
- Ugand- Uganda
- ujgur- Uyghur
- ukrain- Ukrainian
- Ulanbator- Ulaanbaatar
- Upsal-
- Ural- Ural
- uzbek- Uzbek
- Valenci- Valencia
- valon- Walloon
- vandal- vandal
- Vankuver- Vancouver
- Vanuatu- Vanuatu
- Varn-
- Vatikan- Vatican
- Veneci- Venice
- Vien- Vienna
- viking- viking
- Vincent-
- vjetnam- Vietnam
- Vogez- Vosges
- Volg- Volga
- Zagreb- Zagreb
- Zambi- Zambia
- Zanzibar- Zanzibar
- Zeland- Zealand
- Zeŭs- Zeus
- Zimbabv- Zimbabwe
- Zurik- Zurich
Counts follow the officiality marks in Reta Vortaro (ReVo); the Academy of Esperanto keeps the official list in its Akademia Vortaro, and its own counts differ by a few roots. Words built from official roots are normal Esperanto even when they are not on any list: see Word building. Academy.