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 Unable to speak distinctly or express oneself clearly

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One who supervises students in an examination hall

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 A piece of a living tissue or plant that is transplanted surgically

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Photographers who follow celebrities to get their pictures to sell them

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The activity of writing dictionaries

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The date on which an event took place in a previous year

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A person who thinks that bad things are more likely to happen or who emphasises the bad part of a situation

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Deliberately and maliciously set something (buildings usually) on fire