Tria Oficiala Aldono (3OA): the 186 official roots
All 186 roots made official by Tria Oficiala Aldono (3OA) (1921), alphabetically, with their meaning in English and a link to each dictionary entry.
- abdik- abdication
- absorb- absorption
- abund- bounty
- adapt- adaptation
- administraci- administration
- admiralitat- admiralty
- aeroplan- airplane
- aflikt- affliction
- aĝi- agio
- akcesor- accessory
- aklam- acclaim
- akuz- charge
- anarĥi- anarchy
- anticip- anticipation
- apartament- apartment
- apelaci- appeal
- aplik- application, specific use
- arbitraci- arbitration
- ard- heat
- arĥaik- archaic
- arĥitekt- architect
- arĥiv- archive
- arkeolog- archeologist
- arkeologi- archeology
- arkipelag- archipelago
- aspir- ambition
- ateist- atheist
- atribut- attribute
- aŭtokrati- autocracy
- barelief- bas-relief
- barier- barrier
- bilet- ticket
- binokl- binoculars
- blok- block
- blokad- blockade
- centraliz- centralize
- cirkul- circulate
- cistern- cistern
- civilizaci- civilization
- civit- polity
- ĉifr- cipher
- debet- debits
- dedukt- deduce
- dekadenc- decadence
- deklaraci- announcement
- dekoraci- decoration
- delegaci- delegation
- demagogi- demagoguery
- demonstraci- demonstration
- depon- deposit
- dign- dignity
- diletant- dilettante
- disĉipl- disciple
- dogan- customs
- edikt- edict
- efekt- effect
- efemer- ephemeralness
- eklips- eclipse
- emfaz- emphasis
- eminenc- eminence
- emoci- emotion
- erotik- erotic
- erudici- erudition
- erupci- eruption
- etiket- etiquette
- evoluci- evolution
- feri- holiday, vacation
- fili- branch
- fisk- exchequer
- flagr- flicker
- flustr- a whisper
- furor- hit (popular song
- garn- garnish
- geolog- geologist
- grimp- climb
- gruz- gravel
- hezit- hesitation
- hierarĥi- hierarchy
- hirt- bristly
- hura- hurrah
- ideografi- ideography
- idiotism- idiomatic expression
- imperialism- imperialism
- impertinent- impertinent
- indik- indication
- indukt- induce
- intervju- interview
- invad- invasion
- Jesu- Jesus
- jud- Jew
- judaism- Judaism
- ĵaket- jacket
- kandelabr- candelabrum
- karier- career
- kariol-
- kateĥist- catechist
- kateĥiz- catechesis
- kirl- swirl
- klak- clack
- klasifik- classification
- kolektiv- collective
- komandit-
- kompromit- compromise
- konfekci- ready-made suit
- konfidenc- confidentiality
- konkord- concord
- konkurenc- commercial competition
- konservativ- conservative
- konsult- consult
- kont- account
- kontribu- contribution
- kontribuci-
- konversaci- conversation
- korupt- corruption
- kvast- tassel
- laik- layman
- legitim- legitimized
- lekci- lecture
- maksim- maxim
- maksimum- maximum
- malt- Malta
- manifestaci- demonstration
- medi- environment
- melankoli- melancholy
- menci- mention
- mens- mind
- minimum- minimum
- modif- edit, modification
- naturalism- naturalism
- navigaci- navigation
- nekrolog- necrology
- nominal- nominal
- observatori- observatory
- obtuz- obtuse
- oligarĥi- oligarchy
- ornitologi- ornithology
- pacifism- pacifism
- pacifist- pacifist
- pamflet- pasquinade
- pasaĝer- passenger
- plutokrati- plutocracy
- probabl- probability
- proced- process
- profan- profane
- prononc- pronunciation
- puf- puff
- reakci- reaction
- recenz- review
- referenc- reference
- reĝim- regime
- rekrement- draff
- revelaci- revelation
- revizi- revision
- revizor- government inspector
- rezign- resignation
- rezignaci- resignation
- rigor- rigorous
- rit- rite
- rok- rock
- skol- school (of art
- soci- society
- sociolog- sociologist
- sond- probe
- spekulaci- speculation
- spekulativ- speculative
- split- splinter
- spontane- spontaneous
- stenograf- write shorthand
- stenografi- stenography
- stopl-
- stump- stump
- sugesti- suggest
- ŝose- highway
- ŝveb- hover
- tegol- roofing tile
- teĥnik- technique
- tost- toast
- tragik- tragic
- tuberkul-
- tuberkuloz- tuberculosis
- turb- spinning top
- unik- unique
- vad- mudflat
- vari- variable
- verv- verve
- viktim- sacrifice
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.