| 1 | oak | carvalho (Quercus spp.) | BAS |
| 2 | oar | remo = paddle | BAS |
| 3 | oath | juramento / to swear an oath = prestar juramento / to take oath = fazer juramento / (obs.: jurar = to swear) | BAS |
| 4 | oats | aveia (Avena sativa) | BAS |
| 5 | object | objeto = a thing that you can see and touch and that is not alive | BAS |
| 6 | objective | objetivo, meta = goal, end, aim, purpose; "to pursue business objectives" | BAS |
| 7 | obliterate (to) | apagar = to erase | ADV |
| 8 | oblivion / oblivious | esquecimento = the state of something that is not remembered, used, or thought about any more; "the names of the people who lived here long ago have faded into oblivion" // esquecido; oblivious of = esquecido de, inconsciente de | INTERM |
| 9 | obnoxious | insolente, detestável = unpleasant in a way that makes people feel offended, annoyed, or disgusted; hateful; offensive; "some teenagers were being loud and obnoxious" | INTERM |
| 10 | obscene | obsceno, indecente = dirty, nasty, filthy, indecent | INTERM |
| 11 | obtrude (to) | intrometer-se, invadir, irromper = to thrust forward; to impose without invitation or need | ADV |
| 12 | occupation | ocupação; profissão = the work that a person does; a person's job or profession | BAS |
| 13 | occupy (to) / occupied | ocupar (tempo); preencher (tempo) = to fill up with some activity; spend; "to occupy time reading" / ocupado = taken; "several houses on the street haven't been occupied for years"; "only the first floor is fully occupied"; "a light comes on when the lavatory's occupied" | BAS |
| 14 | ocher; ochre | ocre (cor) | ADV |
| 15 | octopus | polvo | BAS |
| 16 | odd | 1) ímpar (número) (obs.: even = número par) // 2) estranho; esquisito = strange or unusual; different from what is normal or expected, bizarre, quaint; "that's odd that she didn't go directly home after work" / odd manners = maneiras estranhas / odd jobs = biscates, bicos / odd-size baggage = bagagem especial; large, heavy and unusual shape (bikes, skates, musical instruments, etc) | BAS |
| 17 | odds | probabilidade, chance = the chance that one thing will happen instead of a different thing; "the odds of winning the lottery are not good" / at odds = em desacordo = on bad terms / to assess the odds = avaliar as probabilidades | BAS |
| 18 | odor; odour | odor, cheiro; an unpleasant odor | INTERM |
| 19 | offense (US); offence (UK) | 1) ataque = attack, assault / 2) ofensa, crime, pecado = a violation or breaking of a social or moral rule | INTERM |
| 20 | offer (n) / offer (to) | oferta / oferecer | BAS |
| 21 | offhand | improvisado; de improviso = without preparation | INTERM |
| 22 | office | escritório / main office = matriz; branch office = filial / office hours = horário de expediente = working hours / office-boy = contínuo; mensageiro / office clerk = auxiliar de escritório / office staff = pessoal de escritório | BAS |
| 23 | officer | 1) oficial (exército) // 2) alto funcionário, executivo; Chief Executive Officer = CEO, executivo-chefe; Chief Information Officer = CIO / top corporate officers = altos executivos | BAS |
| 24 | official | 1) funcionário (principalmente público) / 2) autoridade | BAS |
| 25 | offset / offset (to) | compensar; equilibrar = to balance / compensação | BAS |
| 26 | offshore | a pouca distância da praia; na plataforma continental = at a distance from the shore; offshore platform = plataforma marítima | BAS |
| 27 | offspring | prole, descendência = children or young of a particular parent; descendants | BAS |
| 28 | often | frequentemente / how often = quantas vezes / every so often = de vez em quando | BAS |
| 29 | oil | óleo, petróleo / oil industry company = companhia petrolífera / oil refinery = refinaria / oil well drilling equipment = equipamento de perfuração de poços de petróleo / oil well tubing = tubulação de poços petrolíferos | BAS |
| 30 | ointment | pomada | BAS |
| 31 | okra | quiabo = lady's fingers; gumbo (Abelmoschus esculentus) | INTERM |
| 32 | old | velho, antigo; "the Old Man and the Sea" / old-fashioned = antiquado, ultrapassado = out-of-date, outdated | BAS |
| 33 | oldie | popular no passado = a song, joke, movie, etc., that was popular at a time in the past. | INTERM |
| 34 | olive | azeitona (Olea europaea) / olive oil = azeite | BAS |
| 35 | omelet; omelette | omelete | BAS |
| 36 | omen / ominous | agouro, presságio; "evil omen" / agourento, nefasto, preocupante, de mau agouro = suggesting that something bad is going to happen in the future; "an ominous threat of war" | INTERM |
| 37 | one-way | mão única (tráfego) (obs.: two-way = mão dupla) | BAS |
| 38 | ongoing | contínuo; ininterrupto = continuous / ongoing process = processo contínuo / ongoing basis = base contínua | BAS |
| 39 | onion | cebola (Allium cepa) | BAS |
| 40 | onslaught | ataque violento; investida = an especially fierce attack; something resembling such an attack; "an onslaught of technological changes" | INTERM |
| 41 | ooze (to) | gotejar, pingar, esvair-se, fluir (líquido), exsudar = to flow or leak out slowly, as through pores or very small holes; "sap oozed from the tree"; "the cut on her finger was oozing blood" | ADV |
| 42 | open (to) | abrir | BAS |
| 43 | opening | 1) vaga (emprego) = an opportunity or chance, especially for employment or promotion in a business concern; vacancy / job opening = vaga de emprego // 2) estreia = first performance | BAS |
| 44 | operate (to) / operation / operational / operator | operar; funcionar // operação, funcionamento / emergency operation / mathematical operation / surgical operation = operação cirúrgica, cirurgia = surgery / in operation = em funcionamento // operacional / operational level = nível operacional / operational research = operations research = pesquisa operacional // operador | BAS |
| 45 | opossum | gambá | INTERM |
| 46 | oracle | oráculo, profecia | INTERM |
| 47 | orange | laranja | BAS |
| 48 | orb | orbe, globo, esfera | ADV |
| 49 | orchard | pomar; "beyond the vegetable garden is an orchard with a variety of fruit trees" | BAS |
| 50 | orchestra | orquestra; to conduct an orchestra = reger uma orquestra | BAS |
| 51 | orchid | orquídea (fam: Orchidaceae) | BAS |
| 52 | ordeal | experiência difícil; provaçâo, suplicio = any very severe, difficult, or trying test, experience, or trial; "the hikers were finally rescued after a three-day ordeal in the wilderness" | ADV |
| 53 | order (n) / order (to) | 1) pedido, encomenda = request of goods or services / back order = pedido pendente / to place an order = fazer pedido / made to order = feito sob encomenda / order acknowledgement = confirmação de pedido / order entry = carteira de pedidos / order fulfillment = atendimento de pedido / order point = ponto reposição / purchase order = ordem de compra // 2) ordem (comando); "he gives the orders around here = ele dá as ordens por aqui" // 3) ordem (disposição): "are these books in any particular order? = estes livros estão em alguma ordem específica?" / alphabetical order / out of order = em desordem, estragado / by order of = por ordem de / in order to = a fim de pedir /// pedir, encomendar; "we should order another bottle of wine"; "to order a subscription to a magazine"; "to order back issues" | BAS |
| 54 | ore | minério / iron ore = minério de ferro / to dig ore = extrair minério | BAS |
| 55 | oregano | orégano = marjoram (Origanum vulgare) | BAS |
| 56 | organ | órgão (instrumento musical) | BAS |
| 57 | organize (to) / organization / organizational | organizar // organização, empresa; organization chart = organograma // organizacional / organizational issues = questões organizacionais | BAS |
| 58 | ounce (abrev.: oz) | onça (peso) = aprox. 31 g | INTERM |
| 59 | oust (to) | expulsar, remover, exonerar = to expel, remove, or force (someone) from a place or position occupied | ADV |
| 60 | outage | blecaute, falha no fornecimento de energia = a failure or interruption in use or functioning | ADV |
| 61 | outback | área distante e não povoada = the country far away from cities, towns, or villages especially in Australia; bush (The bush), backwoods, wilderness | INTERM |
| 62 | outboard | do lado externo = located on the outside of a ship's hull or aircraft / outboard motor = motor de popa | INTERM |
| 63 | outbreak | 1) erupção, eclosão, deflagração (guerra) / 2) surto (doença) / 3) explosão (violência) / at the outbreak of war = ao irromper a guerra | BAS |
| 64 | outburst | explosão (raiva, choro, etc) = a sudden and often violent release, outpouring, or eruption: | INTERM |
| 65 | outcast | rejeitado, excomungado, pária = a person who is rejected or cast out, as from home or society | INTERM |
| 66 | outcome | resultado; consequência = result; consequence | BAS |
| 67 | outfit / outfit (to) | roupa, traje para uma época ou fim específico = a set of clothes worn together, typically for a particular occasion or purpose; winter outfit; ski outfit; riding outfit = roupa de equitação / equipar, fornecer = to provide, to supply, to furnish | BAS |
| 68 | outlet | 1) tomada (eletricidade) (fêmea) = socket; "the plug must be inserted fully into the power outlet or the appliance will not work" // 2) loja de varejo; loja de venda de ponta de estoque; posto de venda = retail outlet | BAS |
| 69 | outline (n) / outline (to) | esboço = draft, sketch / esboçar | BAS |
| 70 | outlook | 1) perspectiva, visão = prospect for the future, perspective; "a positive outlook on life = uma visão positiva da vida"; "the outlook for steel demand in US" // 2) ponto de vista = a mental attitude or point of view; standpoint | BAS |
| 71 | outpace (to) | ultrapassar = to surpass in speed | ADV |
| 72 | outpouring | efusão, expansão, derramamento = something that pours out | ADV |
| 73 | output | produção; rendimento; saída = quantity produced; yield (obs.: input = entrada) | BAS |
| 74 | outrage (n) / outrage (to) / outrageous | escândalo, atrocidade / ofender, ultrajar, injuriar // 1) escandaloso, ultrajante, chocante; "outrageous crime"; "outrageous behaviour" / 2) exorbitante, abusivo; "outrageous price" | INTERM |
| 75 | outside | externo; de fora; outside consultant = consultor externo | BAS |
| 76 | outskirts | vizinhança; cercania; arredores = neighborhood, surroundings | BAS |
| 77 | outsmart (to) | superar, sobrepujar | ADV |
| 78 | outsource (to) / outsourcing | terceirizar // terceirização, trabalho feito por outra empresa, normalmente fora da empresa-cliente; "the company outsources everything except core competencies" / (obs: contractor = empresa que fornece recursos para trabalhar como terceiros na empresa-cliente) | INTERM |
| 79 | outstanding | 1) notável, importante, excelente, proeminente = striking; remarkable; conspicuous; "outstanding courage" // 2) pendente = unresolved / outstanding itens = itens pendentes "a long outstanding problem in astronomy" // 3) vencido e não-pago = unpaid / outstanding bills = contas não-pagas; "he left several bills outstanding" | BAS |
| 80 | ovation | aclamação, ovação | INTERM |
| 81 | oven | forno | BAS |
| 82 | over | sobre, acima de, por cima; "their balcony looks out over the city" / to jump over the wall / to leap over the brook = transpor um riacho / all over the country = por todo o país / over the river = do outro lado do rio / over here = por aqui; over there = por ali, lá / over time = durante, ao longo do tempo; "over the next 18 months"; "let's discuss it over dinner" / over and above = além disso / to be over = estar terminado, acabado / over again = outra vez / over and over (again) = repetidamente | BAS |
| 83 | overall | global, total / overall estimate = estimativa global / overall vision = visão global / overall performance = desempenho global; "to set a goal of increasing overall sales by 25% = estabelecer um objetivo de aumentar as vendas globais em 25%" | BAS |
| 84 | overcome (to) | superar, vencer "to overcome shortcomings" | BAS |
| 85 | overdraft | saque a descoberto; overdrafting checking = cheque especial | INTERM |
| 86 | overdue | vencido e não pago (conta; título); em atraso = unpaid when due | BAS |
| 87 | overflow (to) / overflow (n) | inundar, transbordar; "books and papers overflowed his desk" // 1) excesso, abundância // 2) inundação; alagamento = flood, inundation; "the river overflowed its banks" | BAS |
| 88 | overhaul / overhaul (to) | revisão completa (mecânica) = thorough repair // revisar, reparar | INTERM |
| 89 | overhead | 1) aéreo, suspenso, em cima, por cima, no alto = above head; overhead compartment // 2) indiretos, gerais / overhead expenses = despesas gerais / overhead costs = custos indiretos | BAS |
| 90 | overlap (n) / overlap (to) | sobreposição / sobrepor | BAS |
| 91 | overlay (n) / overlay (to) | camada, revestimento, cobertura = something laid or applied over something else / pôr camada; cobrir; revestir | BAS |
| 92 | overload (to) / overload (n) | sobrecarregar; abarrotar // sobrecarga / information overload = excesso de informações | BAS |
| 93 | overlook (to) / overlook (n) | 1) ver do alto = to look down upon from above // 2) passar por alto, não ver, não fazer caso, ignorar; "the opportunity should not be overlooked"; "the detective overlooked an important clue" // mirante, belvedere = a high place with a good view; "there's a great overlook where you can get a panoramic view of the valley below" | INTERM |
| 94 | overly | excessivamente; "overly curious"; "overly formal" | ADV |
| 95 | overnight | noturno, durante a noite / overnight train; overnight delivery | BAS |
| 96 | overrate (to) | exagerar o valor; superestimar = overestimate | INTERM |
| 97 | override (to) | 1) cancelar, anular, ignorar = to give a command that cancels the effect of something; "press that button to override the system" // 2) sobrepor // 3) passar por cima = to prevail over | INTERM |
| 98 | overrun (to) | transpor; ultrapassar = to run beyond, to overflow | INTERM |
| 99 | oversea; overseas | além-mar, internacional = beyond the sea, abroad / overseas operations | BAS |
| 100 | oversee (to) | inspecionar, supervisionar = to direct workers as a supervisor; to supervise | INTERM |
| 101 | overshoot (to) | passar do limite; exceder = to pass or go by or beyond | ADV |
| 102 | overt | não oculto, aberto, público, evidente, manifesto = open to view; observable | ADV |
| 103 | overtake (to) | ultrapassar = to move past (another vehicle or person) travelling in the same direction | BAS |
| 104 | overtime (adj) / overtime (adv) | fora do horário; extra; horas extras; serão / overtime work = trabalho extra; "how much did you earn last month in overtime?"; "I worked two hours of overtime last week" // ao longo do tempo (adv) | BAS |
| 105 | overview | visão geral, panorama, resumo = overall vision; "a few short sentences can provide the overview of a book's plot" | BAS |
| 106 | overwhelm (to) / overwhelming (adj) | oprimir, esmagar /// 1) esmagador = very great in number, effect, or force / overwhelming defeat (victory) = derrota (vitória) esmagadora / overwhelming majority = maioria esmagadora / overwhelming desire = desejo irresistível // 2) confuso, difícil; "she found the job overwhelming at first" | BAS |
| 107 | owe (to) | dever, ser devedor = to be in debt; "I owe you US$100"; "he still owes for his house" | BAS |
| 108 | owing to | devido a; por causa de = because of; "they were late, owing to the traffic" | BAS |
| 109 | owl | coruja | BAS |
| 110 | own (to) / owner / ownership | possuir // proprietário / ship owner = armador // propriedade | BAS |
| 111 | ox | boi | BAS |
| 112 | oyster | ostra | BAS |
