A rule of thumb Meaning in English
expression · lemma: rule of thumb
Definition
A rule of thumb is a general guideline or basic principle based on experience or common practice, rather than a strict rule.
Usage & Nuances
Informal and common in speech and writing. Usually used as 'as a rule of thumb,' often before providing a practical estimate or guideline. Not a scientifically precise rule; it's based on habits, experience, or common sense.
Example Sentences
A rule of thumb is to drink eight glasses of water a day.
basic
As a rule of thumb, double-check your work before you finish.
basic
A rule of thumb is to arrive 10 minutes early to appointments.
basic
You don’t have to be exact—just use a rule of thumb when measuring.
natural
As a rule of thumb, if it looks too good to be true, it probably is.
natural
My dad always says, 'A rule of thumb is to never skip breakfast.'
natural