estimate - definition and synonyms

noun [countable] 

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  1. 1
    an amount that you guess or calculate using the information available

    According to official estimates, over 25% of carbon emissions come from the United States.

    It is difficult to obtain an accurate estimate of how many tigers are left.

    a rough estimate:

    The figure mentioned is just a rough estimate.

  2. 2
    a statement telling a customer how much money you will charge if they employ you to do a particular piece of work

    Can you give us an estimate for the repairs to the roof?