O 
English         Mondlango

oaf                 stultoro
oar                 remilo
oasis               oaso
oath                swero
oats                aveno
obdurate            obstina
obedient            obema
obese               korpulenta
obey                obei
obituary            nekrologo
object              objekto
objective           objektiva
oblation            ofero
obligation          devo
obligatory          deviza
oblige              devizi
oblique             oblika
oblivion            fogeso
obnoxious           abomena
obscene             obsena
obscenity           obseno
obscure             disklara
observatory         observatorio
observe             observi
observer            observanto
obsess              obsedi
obsolete            arkaika
obstacle            obstaklo
obstetrical         obstetrika
obstinate           obstina
obtain              akiri
obtuse              obtusa
obvious             evidenta
occasion            okazo
occasionally        okaze
occlude             stopi
occult              okulta
occupant            okupanto
occupation          okupo
occupy              okupi
occur               okazi
ocean               oceno
ochre               okro
octagon             oktagono
octave              oktavo
October             oktobro
octopus             polpo
oculist             okulisto
odd                 stranga,nepara
ode                 canto
odious              abomena
odor                odoro
off                 for
offence             ofendo
offend              ofendi
offensive           ofenda
offer               oferi
offhand             senprepara
office              ofico
officer             oficoro
official(adj.)      ofica
official(n.)        oficisto
offset              kompensi
offshoot            branco
offspring           ido
often               ofte
ogle                ogli
ogre                ogro
ohm                 ohmo
oil                 oleo
oilcloth            oletuko
oily                olea
ointment            salbo
Oklahoma            Oklahomo
old                 disyuna
olfactory           smela
oligarchy           oligarkio
olive               olivo
Olympic             Olimpiko
omen                omeno
omit                preterlasi
omnipotent          cio-potenca
omnipresent         cieesa
once                iam,un foyo
one                 un
oneself             si
onerous             peza
onion               cepo
only(adv.)          nur
only(adj.)          nura
onslaught           atakegi
onset               ekataki
onward              frontwarde
ooze                flueti
opaque              opaka
opal                opalo
open                disfermi
opera               opero
operetta            opereto
operate             operati
operation           operato
operator            operatoro
ophthalmic          okula
opine               opinii
opinion             opinio
opium               opio
opponent            oponanto
opportune           oportuna
oppose              oponi
opt                 opti
optical             optika
optimism            optimismo
optimum             optimo
option              opto
optional            opta
or                  or
oracle              oraklo
orange              oranjo
orangutan           oranguto
oration             orato
orator              oratoro
orbit               orbito
orchestra           orkestro
orchard             frut-arbeyo
orchid              orkido
ordain              ordeni
ordnance            artilerio
ordeal              aflikto
order (n.)          ordo
order (v.)          orderi
orderly             orde
ordinal             ordinala
ordinary            ordinara
ordination          ordeno
ore                 minaco
organdy             orgando
organ(part of body)   organo
organ(musical instrument) orgeno
organic             organika
organism            roganiko
organization        organizo
organize            organizi
orgasm              orgasmo
orgy                orgio
orientate           orienti
orientation         oriento
orifice             aperturo
origin              origino
oriole              oriolo
ornament            orni
ornamental          orna
ornate              ornamita
ornithology         ornitologio
orphan              orfo
orphanage           orfeyo
orthodox            ortodoksa
orthography         ortografio
oscillate           oscili
ostrich             struto
other               alia
otherwise           aliel
other people        aliu
other thing         alio
ounce              onso
our                mua
oust               elpeli
out                ekster
outbreak           eksplodo
outburst           eksplodi
outcome            rezulto
outcry             kriado
outdo              superi
outer              ekstera
outflow            elfluo
outlay             spendo
outlet             elflueyo
outline(v.)        skizi
outlook            perspektivo
outnumber          nombre superi
outpost            fronta posteno
output             produko
outrage            kruelo
outright           absoluta
outset             eko
outside            ekster
outsider           eksteroro
outstanding        elstara
outstrip           superi
oval               ovala
oven               forno
over               super
overall            tuta
overbearing        fiera
overcoat           palto
overcome           venki
overhaul           ripari
overhear           subawdi
overpower          subizi
oversee            supervidi
oversight          ignoro
overt              evidenta
overthrow          renversi
overwhelm          dronizi
overwrite          surskribi 
owe                xuldi
owl                awlo
own(adj.)          selfa
own(v.)            posedi
owner              posedanto
ox                 bovo
Oxford             Oksfordo
oxide              oksido
oxidize            oksidizi
oxygen             oksigeno
oyster             ostro
ozone              ozono
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