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      adj not capable of continuing at the same rate or in the same way
      We must cut spending. This is unsustainable.
      We require more energy than the biggest animal that has ever existed. That is why our lifestyle is unsustainable.
      Despite abundant scientific evidence that use of this technology is unsustainable and is implicated in the decline of wild salmon stocks and other environmental hazards not just in BC, but worldwide, both governments continue to advocate for and support the expansion of open net-cages.
      The consequences of the attempt to "keep consumer spending up" to unsustainable levels will ultimately be disastrous.
      The trend is unsustainable in an energy and water starved world.
      adj describing a disease or condition that exists at or from birth ¶ describing sb who always shows a particular bad quality
      Congenital heart defect (CHD) or congenital heart anomaly[2] is a defect in the structure of the heart and great vessels that is present at birth.
      Congenital syphilis is syphilis present in utero and at birth, and occurs when a child is born to a mother with syphilis.
      Rondo and several other actors had a congenital condition known as acromegaly.
      His only child is his daughter Mita, who was born with a congenital defect on her lip medically called cleft lip or incised lip.
      I can't remember who it was that called Bill Clinton " a congenital liar.
      Compare congenital, genital, habitual, inborn, and innate.
      adj clearly expressed ¶ able to think clearly
      He has explained the trademark issue in a lucid and accurate manner.
      This is one of his best books, a lucid and persuasive combination of broad sweep with vivid detail and of synthesis with original research.
      An unadjudged lunatic can enter into a valid contract during lucid intervals.
      I have been an Apple devotee for a long time. But in my more lucid moments, I recognize that Apple is no cuddlier in the end than Microsoft.
      A lucid dream is any dream in which one is aware that one is dreaming.
      v[T] say or perform again, repeat
      For example if we want to iterate through values in A1:A5 in the input worksheet, the step will look as follows...
      Before we can use the ArrayIterator class we must create the ArrayObject to be able to iterate over it.
      At Twitter our designers can take the time to iterate on new features with their Product Managers, and engineers too, until they're really happy they've got it right.
      The prisoner's dilemma is a canonical example of a game analyzed in game theory that shows why two purely "rational" individuals might not cooperate, even if it appears that it is in their best interests to do so.
      There is also an extended "iterated" version of the game, where the classic game is played over and over between the same prisoners, and consequently, both prisoners continuously have an opportunity to penalize the other for previous decisions.
      n[U] a medical condition in which a man is not able to have sex because his penis does not stay hard ¶ a lack of power to influence people or events
      Erectile dysfunction (ED) or impotence is sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual activity.
      A penile erection is the hydraulic effect of blood entering and being retained in sponge-like bodies within the penis.
      The process is most often initiated as a result of sexual arousal, when signals are transmitted from the brain to nerves in the penis.
      The most important organic causes are cardiovascular disease and diabetes, neurological problems (for example, trauma from prostatectomy surgery), hormonal insufficiencies (hypogonadism) and drug side effects.
      Sildenafil, sold as Viagra and other trade names, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension.
      It's a demonstration of political impotence, of system paralysis, and it makes me feel pessimistic about the system's ability to deliver.
      v[T] say sth unpleasant in an indirect way ¶ place sth/oneself smoothly and stealthily into sth
      "I was about to insinuate that I had coitus with Raj's mother for a dollar," said Sheldon.
      "Chandler?" "I don't, and I'm offended by the insinuation!"
      There are more subtle ways in which race prejudice insinuates itself into political thought and action.
      If you insinuate yourself into someone's favour, you gradually gain their love, trust etc by pretending to be friendly and sincere.
      Sir Hugh insinuated himself into the king's favour by backing him in his battles with the barons.
      n[C] a tool with a blade, used for cutting wheat or long grass
      A sickle is a hand-held agricultural tool with a variously curved blade typically used for harvesting grain crops or cutting forage chiefly for feeding livestock.
      The sickle is used as part of the well known symbol of the hammer and sickle, which is the symbol of Communism or Revolutionary Socialism.
      The sickle represents the agricultural working class or peasantry in this symbol.
      Sickle is a fictional unit of money in the Harry Potter series.
      The popular depiction of Death as a skeletal figure carrying a large scythe and clothed in a black cloak with a hood first arose in 15th Century England, while the title "the Grim Reaper" is first attested in 1847.
      A scythe is an agricultural hand tool for mowing grass or reaping crops.
      The Grim Reaper and the Greek Titan Cronus are often depicted carrying or wielding a scythe.
      n[U] slavery, captivity
      Bondage or ligotage is consensually tying, binding, or restraining a partner for erotic, aesthetic, and/or somatosensory stimulation.
      Rope, cuffs, bondage tape, self-adhesive bandages, or other restraints may be used for this purpose.
      Bondage itself does not imply sadomasochism.
      The letter "B" in the acronym "BDSM" comes from the word "bondage".
      Debt bondage (also known as debt slavery or bonded labor) is a person's pledge of their labor or services as security for the repayment for a debt or other obligation.
      Debt bondage has been described by the United Nations as a form of "modern day slavery" and the Supplementary Convention on the Abolition of Slavery seeks to abolish the practice.
      n[U] state of being legal
      The federal judge dismissed a lawsuit by a educational media group of California over the legality of streaming copyrighted videos on secure course websites (learning management systems).
      Virginia's Attorney General Ken Cuccinelli filed a lawsuit against the government challenging the legality of the health care legislation (Obamacare).
      In my mind it's hard to rationalize the legality and availability of assault rifles, machine guns etc to the general public.
      The body has faced a raft of legal challenges from plaintiffs who dispute its legality.
      They intended to challenge the legality of his claim in the courts.
      v[T] put into code or cipher
      In cryptography, encryption is the process of encoding messages or information in such a way that only authorized parties can read it.
      Encryption does not of itself prevent interception, but denies the message content to the interceptor.
      If you, for example, want to set up a website for secure electronic commerce, you would need to encrypt the communication channel between your customers and your site, so that no prying eyes can tell what business is being transacted as the messages go up and down over the Internet.
      The SSL connection, established between your web browser and the CMPA's web server, ensures that all data traffic is encrypted.
      Secure Sockets Layer (SSL) is an outdated encryption method superseded by Transport Layer Security.
      Disk encryption uses disk encryption software or hardware to encrypt every bit of data that goes on a disk or disk volume.
      All your personal data is encrypted and processed securely.
      v[T] draw a line around sth ¶ restrict
      According to Wikipedia, each side of the Pentagon is 921 ft (281 m) long. A circle circumscribed on the outside of a pentagon whose sides are 921 ft long has a radius of 783 ft.
      Compare circumference, circumscribe, circumcise, and circus.
      In the classical Chinese epic novel 'Journey to the West', Sun Wukong, also known as the Monkey King, always circumsribed Master Sanzang, or Monk Tang.
      The freedom of expression is circumscribed by the law of libel.
      After a child/citizen completes 14 years, his right to education is circumscribed by the limits of the economic capacity of the state and its development.
      adj humid ¶ expressing or arousing desire
      You can not expect those who usually travel in an A/C car to take a bus on a sultry day.
      By midnight, the sultry heat still loiters and the residents in flats near the top of Marion Street have left their windows open in the hope of luring a breeze.
      Our findings reveal that the sultry actress is currently in a sizzling romance with a rich and handsome dude.
      It was reported that the sultry actress was the cause of the crisis between the couple.
      This personifies Hong Kong as a sultry, mysterious and empty woman.
      Compare saucy and sultry.
      n[U] the practice of obeying a law or rule, or of doing sth according to a tradition ¶ an act performed as part of a religious or traditional ceremony
      If you observe something such as a law or custom, you obey it or follow it.
      The concept of holidays has most often originated in connection with religious observances.
      There is no indication of the observance of the Easter festival in the New Testament, or in the writings of the apostolic Fathers.
      US stock market will be closed on Wednesday, the Fourth of July, in observance of Independence Day.
      The vow of the Nazarite meant a keeping to the strict observance of a particular lifestyle and consecration to that for the rest of the persons life.
      In the Hebrew Bible, a nazirite or nazarite refers to one who voluntarily took a vow described in Numbers 6:1–21.
      Section 52 deals with participation in religious observance.
      v[I] decrease gradually in size, amount, intensity, or degree
      also a noun
      If something such as power, influence, or a feeling wanes, it becomes gradually less strong or less important.
      Although stocks waxed and waned during the U.S. session, they ultimately lost ground as investors found little to sustain gains.
      The Dow Jones industrial average ended down 89.24 points, or 0.69 percent, at 12,878.13.
      The Standard & Poor's 500 Index was down 7.35 points, or 0.52 percent, at 1,398.94.
      The Nasdaq Composite Index was down 8.99 points, or 0.30 percent, at 2,967.79.
      If the moon is waning, you see less and less of it each night.
      If something is on the wane, it is becoming weaker or less.
      The appeal of hard-core, truck-based SUVs is on the wane.
      The prestige power of the PhD is however on the wane. With mass education, the number of doctorate holders has increased exponentially, so that the elite membership and the high social status that comes with it is weakened.
      adj heavy ¶ serious and important
      She didn't feel like discussing weighty matters over dinner.
      The book is unique. Unlike a weighty tome, it is small, and handy.
      The Nord Piano is weighty and solid, yet it's just light enough to be carried by one person out of the box or in a soft case, or by two people in a hard case.
      The issues raised in the article are weighty and should be treated with the seriousness they deserve.
      He felt a weighty responsibility as the crowds assembled in ever-greater numbers in Tahrir Square.
      adj very poor
      Ned attended school at Avenel until his father died on 27 December 1866. Left indigent, the widow and children moved to a hut at Eleven Mile Creek.
      I just want to point out that the Crusades were not about "Western nations going in to try and change an indigent and ignorant people's culture by force". Both sides, by modern standards, were "indigent and ignorant", with the Western ones being more so at the time period.
      Each month food is distributed by the government for indigent people.
      The applicants are indigent people in a particularly vulnerable position in society.
      South Carolina funded medical care for poor citizens and Alabama funded free legal counsel for indigent defendants.
      v[I] consent or comply passively or without protest
      I don't think the current Israeli leadership is going to acquiesce to that.
      It does not mean that we acquiesce in those violations.
      Although Gates viewed it as a significant concession, he acquiesced in granting AOL a place in Windows.
      Shoko did not agree with the path laid out for her but acquiesced to her parent's wishes.
      In 2008, following the reveal of the credit crunch, Obama acquiesced to the demands of America's biggest banks with the creation of the 'Troubled Asset Relief Programme', or 'TARP', as it is more colloquially called.
      "All right already" is an impatient way of indicating agreement or acquiescence.
      n[C] small amount of sth, esp food, scrap
      With the last morsel of bread Tom King wiped his plate clean.
      If a morsel of food falls to the ground, one should remove any harmful thing from it, and eat it.
      They had not brought one morsel of food with them, and thirst and hunger began now to torment them.
      The pride (a group of lions) was concentrating on the second carcass, which still had a bit of meat left but were in no mood to share anything with the hyenas, not even a morsel.
      A bank collapses. A tsunami hits Japan. Greece teeters on the brink of default. Chinese growth slows. Every morsel of bad news accentuates the pessimism.
      n[C] a figure made to look like a person, that is dressed in old clothes and put in a field to frighten birds away
      A scarecrow or hay-man is a decoy or mannequin in the shape of a human.
      It is usually dressed in old clothes and placed in open fields to discourage birds such as crows or sparrows from disturbing and feeding on recently cast seed and growing crops.
      The Scarecrow is a character in the DC Comics universe, a supervillain and antagonist of Batman.
      L. Frank Baum's tale The Wonderful Wizard of Oz has a scarecrow as one of the main protagonists.
      Dorothy and Toto follow the yellow brick road, meeting three companions on the way - the Scarecrow, Tinman, and the Cowardly Lion who seek a brain, a heart, and courage respectively and accompany Dorothy.
      n[U] hostility that results in active resistance, opposition, or contentiousness
      In chemistry, antagonism is a phenomenon wherein two or more agents in combination have an overall effect that is less than the sum of their individual effects.
      In the homeland of industrial capitalism, the antagonism between labour and capital had apparently arrived early at a different understanding to the synthesis postulated in the Communist Manifesto.
      Marx and Engels wrote long ago about the overcoming of the antagonism of the city and the countryside.
      A fourth finding by Manuel was that the Tejano children were not provided with equal educational opportunities due to racial prejudice. The State did not provide schools for them. This was due to "a policy of antagonism."
      We used to be so united, and now I feel there's a great wall of antagonism between us.
      Class antagonism, unlike racial difference and conflict, is absolutely inherent to and constitutive of the social field.
      adj polite and respectful
      The check in and security people have been friendly and courteous.
      All of the staff is extremely caring, courteous and knowledgeable.
      Your efficient and courteous service made a stressful time much easier.
      The couple are wonderful and courteous.
      I don't mean to be rude or discourteous, but before we begin, I'd just like to say there is absolutely no scientific evidence to support clairvoyance of any kind. Which means, and again, no insult intended, that you're a fraud, your profession is a swindle, and, uh, your livelihood is dependent on the gullibility of stupid people. Again, no offence.
      n[C] sb/sth used as a test or standard
      A touchstone is a small tablet of dark stone such as fieldstone, slate, or lydite, used for assaying precious metal alloys.
      It has a finely grained surface on which soft metals leave a visible trace.
      As a metaphor, a touchstone refers to any physical or intellectual measure by which the validity or merit of a concept can be tested.
      The Middle East has replaced the Soviet Union as the touchstone of politics and ideology.
      Strictly, such a claim can not be upheld on the touchstone of Article 14 or 16 of the Constitution of India.
      adj disqualified, not entitled
      The Pentagon reports that 75 percent of young Americans are ineligible to serve in our military because of inadequate education, criminal records or weight problems.
      George H. W. Bush declared some firearms as ineligible for importation by saying they had no sporting purpose.
      I don't think an accent will make you ineligible to be a police officer.
      A total of 13% of Black men are ineligible to vote because of past convictions.
      Temporary workers are ineligible for the pension scheme.
      People under 18 are ineligible to vote.
      n[UC] behavior or speech which is intended to attract attention and interest
      It's probably more of just political posturing.
      Obviously, some of this is purely political posturing.
      A law of this kind, if passed and actually applied, unlike the posturing of the German Karlsruhe Court, could have serious consequences in the UK and the EU.
      Sharma branded Akali Dal's latest statements as political posturing.
      Compare pose, posture, and posturing.
      adj relating to ships, boats, or sailing
      A nautical mile (symbol M, NM or nmi) is a unit of distance that is approximately one minute of arc measured along any meridian.
      By international agreement it has been set at 1,852 metres exactly (about 6,076 feet).
      A nautical chart is a graphic representation of a maritime area and adjacent coastal regions.
      Nautical charts are essential tools for marine navigation; many countries require vessels, especially commercial ships, to carry them.
      A nautical almanac is a publication describing the positions of a selection of celestial bodies for the purpose of enabling navigators to use celestial navigation to determine the position of their ship while at sea.