Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “know better (than to do something)”

know better (than to do something)

to be wise enough to behave in a more responsible or acceptable way: You know better than to interrupt when someone else is talking.
(Definition of know better (than to do something) from the Cambridge Academic Content Dictionary © Cambridge University Press)

Word of the Day


When a boat or a ship sails, it travels on the water.

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More