Meaning –  the general rule or guideline, a measurement or method based on experience rather than a scientific calculation

In Context  –  The rule of thumb at the office is that whoever finishes the coffee has to make the next pot.

Origin – It is often thought that this idiom derives from the ancient common law which allowed a man to beat his wife with a stick that was no wider than a thumb.  However, this idiomatic expression is really derived from an old architectural practice. when the thumb was used to measure an inch.


Many profest Christians are like to foolish builders, who build by guess, and by rule of thumb.  J. Durham, Heaven upon Earth, 1685
There’s a rule of thumb in politics. If you’re at a point where you’re complaining about the other guy being mean and unfair and uncivil, that’s probably a sign that you’re losing.  Laura Ingraham

Rule of thumb: Eat for what you’re going to be doing, and not for what you have done. Don’t take in more than you’re willing to burn off.  Lee Haney

It’s a good rule of thumb, it seems to me: if you’re not allowed to see where something comes from, don’t put it in your mouth.  Jonathan Safran Foer

I have learned, as a rule of thumb, never to ask whether you can do something. Say, instead, that you are doing it. Then fasten your seat belt. The most remarkable things follow.  Julia Cameron

  Idiom – To Be BrokeIdiom – As Easy As Pie   


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