Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “you know something”

you know something

(also you know what)
infml used before giving an opinion or a piece of information: You know what? I think it’s time to go home.
(Definition of you know something from the Cambridge Academic Content Dictionary © Cambridge University Press)

Word of the Day

beneficiary

a person or group who receives money, advantages, etc. as a result of something else

Word of the Day

Blog

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