Definition, Meaning & Synonyms

a rule of thumb

noun
/ə ruːl əv θʌm/
Definition
A general principle or guideline based on practical experience rather than theory.
Examples
  • As a rule of thumb, it’s best to have at least eight hours of sleep each night.
  • A rule of thumb for cooking pasta is to use one liter of water for every 100 grams of pasta.
Meaning
This phrase refers to a method or approach that is based on experience rather than a strict rule, allowing for flexibility in its application.
Synonyms
  • Guideline
  • General principle
  • Rule of practice