educated guess

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English - English
An estimate, a guess value based on experience or theoretical knowledge

His educated guess was correct to within 2%, but then, he's been doing this for 10 years and knows what range of values to expect.

An educated guess is a guess which is based on a certain amount of knowledge and is therefore likely to be correct. Estimating the right cooking time will always be an educated guess
An educated guess
conjecture
educated guess
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