obliterate (to)apagar = to erase
oblivion / obliviousesquecimento = 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
obsceneobsceno, indecente = dirty, nasty, filthy, indecent
odor; odourodor, cheiro; an unpleasant odor
offensepecado = sin / ataque = attack, assault
offhandimprovisado; de improviso = without preparation
offset / offset (to)compensar; equilibrar = to balance / compensação
offshorea pouca distância da praia; na plataforma continental = at a distance from the shore; offshore platform = plataforma marítima
okraquiabo = lady's fingers; gumbo (Abelmoschus esculentus)
omen / ominousagouro, 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"
onslaughtataque violento; investida = an especially fierce attack; something resembling such an attack "an onslaught of technological changes"
oracleoráculo, profecia
ordealexperiência 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"
organórgão (instrumento musical)
outboarddo lado externo = located on the outside of a ship's hull or aircraft / outboard motor = motor de popa
outrage (to) / outrage / outrageousofender, ultrajar, injuriar // escândalo, atrocidade // 1) escandaloso, ultrajante, chocante; "outrageous crime"; "outrageous behaviour" / 2) exorbitante, abusivo; "outrageous price"
ovationaclamação, ovação
overdraftsaque a descoberto; overdrafting checking = cheque especial
overhaul / overhaul (to)revisão completa (mecânica) = thorough repair // revisar, reparar
overlay / overlay (to)camada, revestimento, cobertura = something laid or applied over something else / pôr camada; cobrir; revestir
overlyexcessivamente; "overly curious"; "overly formal"
overrun (to)transpor; ultrapassar = to run beyond, to overflow
oversee (to)inspecionar, supervisionar = to direct workers as a supervisor; to supervise
overtnão oculto, aberto, público, evidente, manifesto = open to view; observable