obliging: komplez-anta, -ema; serv-ema.
oblique: obliqua.
obliterate: (erase) efacar; (cancel) obliterar; (cf. destruktar, domajar).
oblivion: (state of being forgotten) oblivi-eso; (unconsciousness) ne-sent-iv-eso; sen-konci-eso.
oblivious: oblivi-inta, -ema; sen-koncia.
oblong: oblonga.
obloquy: blamo, reprocho; des-honoro, shamo.
obnoxious: (hurtful) danjer-oza, noc-iva; (odious) odi-inda, des-agreabla, ofens-anta, -iva, -ema; (reprehensible) blam-inda, reprimand-inda, (liable) expozita (ad).
oboe: hoboyo.
obolus: obolo.
obscene: obcena (cf. grosiera, sham-inda, sen-pudora).
obscenity: (quality) obcen-eso; (thing, act) -ajo.
obscurantism: obskurant-ismo.
obscurantist: obskurant-isto.
obscure: (pr. and fig.) obskur-igar, -eskar; (adj.) -a; -rity: -eso.
obsequies: funero, funerala ceremonio.
obsequious: komplez-ach-ema; -ness: komplez-acho, respekt-acho.
observable: observ-ebla; (appreciable) evalu-ebla.
observance: (fulfilment) plenigo; (obedience) obedi-(ad)o; (practice) praktik-(ad)o; (ceremony) ceremonio (cf. festo).
observant: observ-ema; atenc-ema.
observation: (of an object) observo, remarko; (remark) enunc-ajo, kelka vorti (od, paroli); (of a holiday) fest-(ad)o.
observatory: (in gen.) observ-eyo; (scientific) observatorio.
observe: (see) observar (cf. remarkar, vidar); (fulfil) plen-igar; (obey, follow) obediar; sequar; (say) dicar; (celebrate) festar, celebrar.
obsess: obsedar.
obsidian: obsidiano.
obsolescence: obsolet-esko.
obsolete: obsoleta.
obstacle: obstaklo.
obstetric(al): akush-ala; -s: akush-arto.
obstinacy: obstin-(ad)o.
obstinate: obstin-anta, -ema; (person) -ema; to be o.: (intr.) -ar.
obstreporous: petul-ema; bruis-anta, -ema; tumult-oza.
obstruct: obstruktar (cf. inkombrar, impedar, embarasar); -ion: -(ad)o, -eso; -ive: -iva.
obtain: (get) obtenar; (prevail) pre-valorar, existar; regnar.
obtrude: (intrude) intruzar; (impose) impozar (ulo ad ulu).
obtrusive: intruz-anta, -ema; impoz-anta, ted-anta.
obturate: obturar.
obtuse: (lit. and fig.) obtuza; (sound) ne-sonora, matida.
obverse: (front side) averso.
obviate: preventar, evitar, impedar (ulo).
obvious: evidenta; sent-ebla.
ocarina: okarino.
occasion: efekt-igar, produktar, determinar.
occasion: (opportunity) okaziono; (cause) kauzo; (need) bezono; (necessity) neces-eso; -aclass="underline" kelka-foya, intermit-anta; okazion-ala; -ally: kelka-foye, ul-foye, de tempo a tempo, okazione.
occident: westo; ocidento; -aclass="underline" ocidentala, west-ala; (person) ocident-ano.
occiput: ocipito.
occult: okulta (cf. arkana); -ism: -ismo.
occultation: eklipso.
occupant: okup-anto, -ero.
occupation: (act) okup(ad)o, (fact of being occupied) okup-eso; (that which occupies) okup-antajo, -ivo; labor(ad)o, tasko, mestiero, ofico.
occupy: okupar.
occur: (happen) (intr.) eventar; (to the mind) venar en mento, en pensado.
occurrence: event-o, -ajo; (cf. renkontro, hazardo, cirkonstanco).
ocean: (also fig.) ocean-o (cf. maro); -ic: -ala.
ocelot: oceloto.
ochre: okro.
oclock: kloko (e.g., kin kloki).
octagon: oktogon-o; -aclass="underline" -a, -ala, -atra.
octahedron: oktaedro.
octant: oktanto.
octave: oktavo.
octillion: oktiliono.
October: oktobro.
octogenerian: oka-dek-yar-a, -o.
octopod(a): oktopodo.
octopus: polpo.
octuple: ok-oplo, -opla.
ocular: okul-ala.
oculist: okul-isto.
odalisque: odalisko.
odd: (of numbers) ne-para; (remaining) rest-anta, plusa; extra; (miscellaneous) diversa; (unassorted) des-asort-ita, des-par-ig-ita; (singular) stranja; (funny) drola; (queer) baroka; (eccentric person) original(ul)o; -ity: (oddness) stranj-eso; (object) singular-ajo, stranj-ajo, barok-ajo; odd-job man: faktotum omno-fac-anto; o.ments: diversa rest-aji; play odd or even: ludar ye para o ne-para.
odds: (inequality) ne-egal-eso, disparat-eso; difero; (advantage) avantajo, super-eso; (probability) probabl-eso, chanci; (quarrel) disputo; des-konkordo; to set at o.: des-konkord-igar, -eskar, -ar (kun).
ode: odo.
odeon: odeon.
odious: odi-inda, abomin-nda; (very bad) mal-ega.
odium: des-honoro, infam-eso; (hate) odi-o, -eso; to cast o. on: igar ulu odi-inda o infama.
odometer: hodometro.
odiferous: (bon-)odor-anta, -oza; arom-oza (cf. parfum-oza, -iz-ita).
odorous: (bon-)odor-anta, -oza.
odo(u)r: odoro; parfumo; -less: sen-odoro, ne-odor-anta.
Odyssey: odiseo.
œcumenical: ekuminika.
œdema: edemo.
Œdipus: Edipus.
œsophagus: ezofago.
of: (marking possession) di; (origin, derivation, starting point, quantity, dimension, size) de; (indicating material made of) ek; (out of) ek; (concerning) pri; (agent, authorship) da; of late: recente, de kurte tempo; of course: kompren-ende, -eble; it is very good of you: vu esas tre afabla; the people of old: la popula anciena od olima od di la anciena tempo.
off: (away) for, fore; distanta (de); (from) de (broken off) rupt-ita; ces-ita; separ-ita; we are poorly off: ni esas povra o ne-richa; five kilometers (metres) off: distanta per 5 km.; off and on: kun interrupti, kun halti, de tempo a tempo; take off the hat: de-prenar la chapelo; off with him: for-dukt-ez il! I am off: me iras; hats off: abasez la chapeli! to be off color (colour): havar nejusta koloro; ten meters (metres) off from me: ye dek metri de me; he ran off: il for-kuris; a great way off from here: for de hike; to put off: ajornar; to tear off: arachar; to cut off: de-tranchar (ulo); the clasp is off: la agrafo esas separ-ita (od, des-lig-ita); the marriage is off: la mariajo esas rupt-ita; the gun went off: la fusilo pafis; hands off: abasez la manui! off with you: for-irez vu! to pay off: (a bill, etc.) quit-igar; to be off side: esar exter la termino o limito; the vessel is off the harbor (harbour): la navo esa avan o proxim la portuo; off the hinges: separ-ita de la gondi.
offal: for-jet-ajo; refuzo; (of fowl) abatiso (putr-anta); (excreta) exkrementi.
offence: ofenso (cf. insulto); (legal) delikto (cf. kontravenco, krimono); (attack) atako, asalto; to take o.: ofens-esar da; to give o.: ofensar, insult-(eg)ar; capital o.: krimino morte punis-ebla; arms of o.: atak-armi.