4000 Duolingo Vocabulary List

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n. the feeling of sickness in the stomach by an urge to vomit; strong aversion; disgust

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n. someone who has been nominated for something; candidate

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a. amateur; not professional

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v. force; bind by an obligation; cause to be indebted; do a service or favor for

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a. available; capable of being obtained

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a. not easily explained; beyond from the usual or expected; not divisible by two

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a. causing anger, displeasure, resentment, or affront

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a. of or relating to or involving light or optics

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a. not obligatory; left to choice; not compulsory or automatic

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n. a person skilled in testing for defects of vision in order to prescribe corrective glasses