rule of thumb

noun phrase

1
: a method of procedure based on experience and common sense
2
: a general principle regarded as roughly correct but not intended to be scientifically accurate

Examples of rule of thumb in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For a front-load washing machine, a good rule of thumb is to allow about 6 inches of clearing from the top of the drum to the load. Patricia Shannon, Southern Living, 2 Nov. 2024 Without a talented ad agency behind you, a good rule of thumb is to go for clever humor that makes people smile or chuckle instead of trying for a side-splitting belly laugh. Expert Panel®, Forbes, 29 Oct. 2024 Another rule of thumb is that AI can make something seem to be absolutely correct, even though the response is flawed. Lance Eliot, Forbes, 22 Oct. 2024 In a conflict zone, the legal rule of thumb is that the greater the military advantage conferred by a targeted killing, the greater the permissible civilian harm. Anna Mulrine Grobe, The Christian Science Monitor, 15 Oct. 2024 See all Example Sentences for rule of thumb 

Word History

First Known Use

circa 1658, in the meaning defined at sense 1

Time Traveler
The first known use of rule of thumb was circa 1658

Dictionary Entries Near rule of thumb

Cite this Entry

“Rule of thumb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rule%20of%20thumb. Accessed 21 Nov. 2024.

Kids Definition

rule of thumb

1
: a method based on experience and common sense
2
: a general principle that is roughly correct
Last Updated: - Updated example sentences
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