rule of thumb


1. an approximate method or guideline for doing something






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it's not exact, it's just a rule of thumb

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A 'rule of thumb' is a practical or approximate way of doing or measuring something or a method or rule about what to do in a particular situation or condition that is not exact but based on practical experience. A rule of thumb is general advice to follow. This is a useful expression (noun) to use when you are giving instructions and is more likely to be used in casual contexts. Similar in meaning to 'an approximation'.

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  1. I prefer taking a precise approach to doing things as it is not always reliable to go by a rule of thumb.
  2. As a rule of thumb, we should all be eating at least five portions of fruit and vegetables a day.

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  1. There's no exact number of sales that a new recruit is expected to make each month, but a good rule of thumb is to aim for between 10 and 15.
  2. As a general rule of thumb, we don't take on any new clients unless we are certain that we have the resources to meet their demands.We don't want to get in over our heads.

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