Englishfor English speakers
estimate
Noun
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An estimate is a judgement of a size, value, amount, cost, etc., which is based on incomplete information.
British Telecom will give you an estimate of the cost before doing any work.
estimate
Verb
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If you estimate the number, size, value, amount, cost, etc. of something, you guess based on incomplete information.
It's difficult to estimate how long it will take to get to London because we don't know how bad the traffic will be.
deviation
Noun
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A deviation is difference or movement away from a standard.
They insist that there must be no deviation from that style.
Any deviations from the contract would have to be agreed by both parties.
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A deviation is the difference between a number and the average of a set of values.