SAT最常见的1000个词汇（O）

　　该词表中的词汇主要是针对美国学生挑选出来的，这1000个词汇是属于SAT考试中常出现但美国学生却不熟悉的词汇，因此该词表中的词汇难度较大。如果你是刚刚接触SAT的考生，最好不要立即使用该词表，推荐留在备考的最后阶段再使用。 

obdurate (adj.) unyielding to persuasion or moral influences (The obdurate old man
refused to take pity on the kittens.)
obfuscate (v.) to render incomprehensible (The detective did want to answer the
newspaperman’s questions, so he obfuscated the truth.)
oblique (adj.) diverging from a straight line or course, not straightforward (Martin’soblique language confused those who listened to him.)

oblivious (adj.) lacking consciousness or awareness of something (Oblivious to the
burning smell emanating from the kitchen, my father did not notice that the rolls in
the oven were burned until much too late.)
obscure (adj.) unclear, partially hidden (Because he was standing in the shadows, his
features were obscure.)
obsequious (adj.) excessively compliant or submissive (Mark acted like Janet’s servant,
obeying her every request in an obsequious manner.)
obsolete (adj.) no longer used, out of date (With the inventions of tape decks and CDs,
which both have better sound and are easier to use, eight-track players are now
entirely obsolete.)
obstinate (adj.) not yielding easily, stubborn (The obstinate child refused to leave the
store until his mother bought him a candy bar.)

obstreperous (adj.) noisy, unruly (Billy’s obstreperous behavior prompted the librarian
to ask him to leave the reading room.)
obtuse (adj.) lacking quickness of sensibility or intellect (Political opponents warned
that the prime minister’s obtuse approach to foreign policy would embroil the nation
in mindless war.)
odious (adj.) instilling hatred or intense displeasure (Mark was assigned the odious task
of cleaning the cat’s litter box.)
officious (adj.) offering one’s services when they are neither wanted nor needed
(Brenda resented Allan’s officious behavior when he selected colors that might best
improve her artwork.)
ominous (adj.) foreboding or foreshadowing evil (The fortuneteller’s ominous words
flashed through my mind as the hooded figure approached me in the alley.)
onerous (adj.) burdensome (My parents lamented that the pleasures of living in a
beautiful country estate no longer outweighed the onerous mortgage payments.)
opulent (adj.) characterized by rich abundance verging on ostentation (The opulent
furnishings of the dictator’s private compound contrasted harshly with the meager
accommodations of her subjects.)

oration (n.) a speech delivered in a formal or ceremonious manner (The prime minister
was visibly shaken when the unruly parliament interrupted his oration about failed
domestic policies.)
ornate (adj.) highly elaborate, excessively decorated (The ornate styling of the new
model of luxury car could not compensate for the poor quality of its motor.)
orthodox (adj.) conventional, conforming to established protocol (The company’s
profits dwindled because the management pursued orthodox business policies that
were incompatible with new industrial trends.)
oscillate (v.) to sway from one side to the other (My uncle oscillated between buying a
station wagon to transport his family and buying a sports car to satisfy his boyhood
fantasies.)
ostensible (adj.) appearing as such, seemingly (Jack’s ostensible reason for driving was
that airfare was too expensive, but in reality, he was afraid of flying.)
ostentatious (adj.) excessively showy, glitzy (On the palace tour, the guide focused on
the ostentatious decorations and spoke little of the royal family’s history.)
ostracism (n.) exclusion from a group (Beth risked ostracism if her roommates
discovered her flatulence.)