七月流火，送走了炎热，带走了暑假，迎来了学生新学期，新的开始！各位备考SAT的考生们，趁着开学的好时光，要好好背诵SAT词汇了！SAT词汇每天一背，今天主要来背O字母开头的词汇：Word List 33 oaf -overwrought
oaf N./愚蠢的人/stupid, awkward person. "Watch what you're doing, you clumsy oaf!" Bill shouted at the waiter who had drenched him with iced coffee.
obdurate ADJ./执拗的;顽固的/stubborn. He was obdurate in his refusal to listen to our complaints.
obese ADJ./肥胖的/fat. It is advisable that obese people try to lose weight.
obfuscate V./迷惑，困惑;增加不必要的复杂性/confuse; muddle; cause confusion; make needlessly complex. Was the president's spokesman trying to clarify the Whitewater mystery, or was he trying to obfuscate the issue so the voters would never figure out what went on?
obituary ADJ./讣告/death notice. I first learned of her death when I read the obituary column in the newspaper. also N.
objective ADJ./不为情所动的;公平的/not influenced by emotions; fair. Even though he was her son, she tried to be objective about his behavior.
objective N./目标/goal; aim. A degree in medicine was her ultimate objective.
obligatory ADJ./必须的/binding; required. It is obligatory that books borrowed from the library be returned within two weeks.
oblique ADJ./间接的;倾斜的;无诚意的/indirect; slanting (deviating from the perpendicular or from a straight line). Casting a quick, oblique glance at the reviewing stand, the sergeant ordered the company to march "Oblique Right."
obliterate V./彻底摧毁/destroy completely. The tidal wave obliterated several island villages,
oblivion N./遗忘;赦免/obscurity; forgetfulness. After a decade of popularity, Hurston's works had fallen into oblivion; no one bothered to read them any more.
oblivious ADJ./遗忘的;出神的/inattentive or unmindful; wholly absorbed. Deep in her book, Nancy was oblivious to the noisy squabbles of her brother and his friends.
obnoxious ADJ./讨厌的;冒犯的/offensive. I find your behavior obnoxious; please mend your ways.
obscure ADJ./模糊的，不明了的，暗淡的/dark; vague; unclear. Even after I read the poem a fourth time, its meaning was still obscure. obscurity, N.
obscure V./使模糊;使暗淡/darken; make unclear. At times he seemed purposely to obscure his meaning, preferring mystery to clarity.
obsequious ADJ./谄媚的;拍马屁的;奴性的/slavishly attentive; servile; sycophantic. Helen liked to be served by people who behaved as if they respected themselves; nothing irritated her more than an excessively obsequious waiter or a fawning salesclerk.
obsessive ADJ./强迫性的，入迷的;出神的/related to thinking about something constantly; preoccupying. Ballet, which had been a hobby, began to dominate his life: his love of dancing became obsessive. obsession, N.
obsolete ADJ./过时的;无用的/no longer useful; outmoded; antiquated. The invention of the pocket calculator made the slide rule used by generations of engineers obsolete.
obstetrician N./妇产科医师/physician specializing in delivery of babies. In modern times, the delivery of children has passed from the midwife to the more scientifically trained obstetrician,
obstinate ADJ./坚定的，倔强的/stubborn; hard to control or treat. We tried to persuade him to give up smoking, but he was obstinate and refused to change. Blackberry stickers are the most obstinate weeds I know: once established in a yard, they're extremely hard to root out. obstinacy, N.
obstreperous ADJ./喧闹的，喧嚣的;任性的/boisterous; noisy. What do you do when an obstreperous horde of drunken policemen goes carousing through your hotel, crashing into potted plants and singing vulgar songs?
obtrude V./插手，强入，冲出/push (oneself or one's ideas) forward or intrude; butt in; stick out or extrude. Because Fanny was reluctant to obtrude her opinions about child-raising upon her daughter-in-law, she kept a close watch on her tongue. obtrusive,ADJ.
obtuse ADJ./钝的，迟钝的;愚蠢的/blunt; stupid. What can you do with somebody who's so obtuse that he can't even tell that you're insulting him?
obviate V./消除;排除;避免/make unnecessary; get rid of. I hope this contribution will obviate any need for further collections of funds.
odious ADJ./可恨的;可耻的/hateful; vile. Cinderella's ugly stepsisters had the odious habit of popping their zits in public.
odium N./讨厌;憎恶/detestation; hatefulness; disrepute. Prince Charming could not express the odium he felt toward Cinderella's stepsisters because of their mistreatment of poor Cinderella.
odorous ADJ./有气味的/having an odor. This variety of hybrid tea rose is more odorous than the one you have in your garden.
odyssey N./长期的冒险旅行/long, eventful journey. The refugee's journey from Cambodia was a terrifying odyssey.
offensive ADJ./攻击的;冒犯的/attacking; insulting; distasteful. Getting into street brawls is no minor matter for professional boxers, who are required by law to restrict their offensive impulses to the ring.
offhand ADJ./即时的;随意的/casual; done without prior thought. Expecting to be treated with due propriety by her hosts, Great-Aunt Maud was offended by their offhand manner.
officious ADJ./多管闲事的/meddlesome; excessively pushy in offering one's services. Judy wanted to look over the new computer models on her own, but the officious salesman kept on butting in with "helpful" advice until she was ready to walk out of the store.
ogle V./抛媚眼;送秋波/look at amorously; make eyes at. At the coffee house, Walter was too shy to ogle the pretty girls openly; instead, he peeked out at them from behind a rubber plant.
olfactory ADJ./嗅觉的/concerning the sense of smell. A wine taster must have a discriminating palate and a keen olfactory sense, for a good wine appeals both to the taste buds and to the nose.
oligarchy N./寡头政治/government by a privileged few. One small clique ran the student council: what had been intended as a democratic governing body had turned into an oligarchy.
ominous ADJ./有威胁的;恶兆的/threatening. Those clouds are ominous; they suggest a severe storm is on the way.
omnipotentADJ./无所不能的;全能的/all-powerful. The monarch regarded himself as omnipotent and responsible to no one for his acts.
omnipresentADJ./无所不在的/universally present; ubiquitous. On Christmas Eve, Santa Claus is omnipresent.
omniscient ADJ./无所不知的/all-knowing. I do not pretend to be omniscient, but I am positive about this fact.
omnivorous ADJ./无所不吃的;杂食的/eating both plant and animal food; devouring everything. Some animals, including man, are omnivorous and eat both meat and vegetables; others are either carnivorous or herbivorous.
onerous ADJ./范忠德/burdensome. He asked for an assistant because his work load was too onerous.
onset N./开始，发作，肇端;攻击/beginning; attack. Caught unprepared by the sudden onset of the storm, we rushed around the house closing windows and bringing the garden furniture into shelter. Caught unprepared by the enemy onset, the troops scrambled to take shelter.
onus N./负担;责任/burden; responsibility. The emperor was spared the onus of signing the surrender papers; instead, he relegated the assignment to his generals.
opalescent ADJ./乳白的/iridescent; lustrous. The oil slick on the water had an opalescent, rainbow-like sheen.
opaque ADJ./暗的;不透明的/dark; not transparent. The opaque window shade kept the sunlight out of the room. opacity, N.
opiate N./鸦片剂;安眠的，止痛的/medicine to induce sleep or deaden pain; something that relieves emotions or causes inaction. To say that religion is the opiate of the people is to condemn religion as a drug that keeps the people quiet and submissive to those in power.
opportune ADJ./世纪恰巧的;刚好的/timely; well-chosen. Sally. looked at her father struggling to balance his checkbook; clearly this would not be an opportune moment to ask him for a raise in her allowance.
opportunistN./机会主义者/individual who sacrifices principles for expediency by taking advantage of circumstances. Joe is such an opportunist that he tripled the price of bottled water at his store as soon as the earthquake struck. Because it can break water pipes, an earthquake is, to most people, a disaster; to Joe, it was an opportunity.
optician N./眼镜商/maker and seller of eyeglasses. The patient took the prescription given him by his oculist} o the optician.
optimist N./乐观者/person who looks on the good side. The pessimist says the glass is half-empty; the optimist says it is half-full.
optimum ADJ./最优的/most favorable. If you wait for the optimum moment to act, you may never begin your project. also N.
optional ADJ./可选的/not obligatory; left to one's choice. Most colleges require applicants to submit SAT I scores; at some colleges, however, submitting SAT I scores is optional.
opulence N./奢华;巨富;富裕，富足/extreme wealth; luxuriousness; abundance. The glitter and opulence of the ballroom took Cinderella's breath away. opulent,ADJ.
opus N./作品/work. Although many critics hailed his Fifth Symphony as his major work, he did not regard it as his major opus.
oracular ADJ./神一样的;谜一样的;超自然的，无法理解的/prophetic; uttered as if with divine authority; mysterious or ambiguous. Like many others who sought divine guidance from the oracle at Delphi, Oedipus could not understand the enigmatic oracularwarning he received.
orator N./演讲者/public speaker. The abolitionist Frederick Douglass was a brilliant orator whose speeches brought home to his audience the evils of slavery.
ordain V./指定;规定;任命;命令/decree or command; grant holy orders; predestine. The king ordained that no foreigner should be allowed to enter the city. The Bishop of Michigan ordained David a deacon in the Episcopal Church. The young lovers felt that fate had ordained their meeting.
ordeal N./严酷的考验;折磨/severe trial or affliction. June was so painfully shy that it was an ordeal for her to speak up when the teacher called on her in class.
ordinance N./法令;政令/decree. Passing a red light is a violation of a city ordinance.
ordination N./圣职授任;委任/ceremony making someone a minister. At the young priest's ordination, the members of the congregation presented him with a set of vestments. ordain,V.
orgy N./放荡，旷野;纵酒狂欢/wild, drunken revelry; unrestrained indulgence in a tendency. The Roman emperor's orgies were far wilder than the toga party in the movie Animal House. When her income tax refund check finally arrived, Sally indulged in an orgy of shopping.
orient V./确定方向;校准/get one's bearings; adjust. Philip spent his first day in Denver orienting himself to the city.
orientation N./定位(在社会上)/act of finding oneself in society. Freshman orientation provides the incoming students with an opportunity to learn about their new environment and their place in it.
ornate ADJ./华丽的;过分装饰的/excessively or elaborately decorated. With its elaborately carved, convoluted lines, furniture of the Baroque period was highly ornate.
ornithologistN./鸟类学家/scientific student of birds. Audubon's drawings of American bird life have been of interest not only to the ornithologists but also to the general public.
ornithologyN./鸟类学/study of birds. Audubon's studies of American birds greatly influenced the course of ornithology.
orthodox ADJ./传统的;保守的/traditional; conservative in belief. Faced with a problem, he preferred to take an orthodox approach rather than shock anyone. orthodoxy, N.
oscillate V./振荡/vibrate pendulumlike; waver. It is interesting to note how public opinion oscillates between the extremes of optimism and pessimism.
ossify V./硬化;骨化;化石化/change or harden into bone. When he called his opponent a "bonehead," he implied that his adversary's brain had ossified to the point that he was incapable of clear thinking.
ostensible ADJ./显然的;虚假的/apparent; professed; pretended. Although the ostensible purpose of this expedition is to discover new lands, we are really interested in finding new markets for our products.
ostentatiousADJ./卖弄的;企图惹人注意的;哗众取宠的/showy; pretentious; trying to attract attention. Donald Trump's latest casino in Atlantic City is the most ostentatious gambling palace in the East: it easily outglitters its competitors. ostentation, N.
ostracize V./放逐/exclude from public favor; ban. As soon as the newspapers carried the story of his connection with the criminals, his friends began to ostracize him. ostracism, N.
oust V./剥夺;驱逐/expel; drive out. The world wondered if Aquino would be able to oust Marcos from office. ouster, N.
outlandish ADJ./奇异的;偏僻的;前卫的/bizarre; peculiar; unconventional. The eccentric professor who engages in markedly outlandish behavior is a stock figure in novels with an academic setting.
outmoded ADJ. /过时的/longer stylish; old-fashioned. Unconcerned about keeping in style, Lenore was perfectly happy to wear outmoded clothes as long as they were clean and unfrayed.
outskirts N./边界;郊区;外围/fringes; outer borders. We lived, not in central London, but in one of those peripheral suburbs that spring up on the outskirts of a great city.
outspoken ADJ./坦率直言的/candid; blunt. The candidate was too outspoken to be a successful politician; he had not yet learned to weigh his words carefully.
outstrip V./超过/surpass; outdo. Jesse Owens easily outstripped his white competitors to win the gold medal at the Olympic Games.
outwit V./欺骗;瞒骗/outsmart; trick. By disguising himself as an old woman, Holmes was able to outwit his pursuers and escape capture.
ovation N./热情洋溢的喝彩/enthusiastic applause. When the popular tenor Placido Domingo came on stage in the first act of La Boheme, he was greeted by a tremendous ovation.
overbearing ADJ./傲慢专横的/bossy and arrogant; decisively important. Certain of her own importance, and of the unimportance of everyone else, Lady Bracknell was intolerably overbearing in her manner. "In choosing a husband," she said, "good birth is of overbearing importance; compared to that, neither wealth nor talent signifies."
overt ADJ./明显的;公然的/open to view. According to the United States Constitution, a person must commit an overt act before he may be tried for treason.
overwroughtADJ./歇斯底里的/extremely agitated; hysterical. When Kate heard the news of the sudden tragedy, she became too overwrought to work and had to leave the office early. 以上就是我跟大家分享的关于SAT词汇O- 的分享，希望对大家有所帮助！最后预祝大家在SAT考试中取得好成绩！