Definition of know
1 a (1) : to perceive directly : have direct cognition of (2) : to have understanding of <importance of knowing oneself> (3) : to recognize the nature of : discern b (1) : to recognize as being the same as something previously known (2) : to be acquainted or familiar with (3) : to have experience of
2 a : to be aware of the truth or factuality of : be convinced or certain of b : to have a practical understanding of <knows how to write>
3 archaic : to have sexual intercourse with
1 : to have knowledge
2 : to be or become cognizant —sometimes used interjectionally with you especially as a filler in informal speech
: to have knowledge of <didn't know from sibling rivalry — Penny Marshall>
Examples of know in a sentence
He knows a lot about the history of the town.
Do you know the answer?
I don't know her name.
Do you know what time it is?
I don't know the words to that song.
They knew a good deal about the problem.
She knows the rules of the game.
If you want the answer, ask someone who knows.
I don't know much about art, but I know what I like.
She knows that many people will not believe her.
Origin of know
Middle English, from Old English cnāwan; akin to Old High German bichnāan to recognize, Latin gnoscere, noscere to come to know, Greek gignōskein
First Known Use: before 12th century
First Known Use of know
KNOW Defined for Kids
Definition of know for Students
knew \ˈnü, ˈnyü\known \ˈnōn\knowing
1 : to recognize the identity of <I know that guy!>
2 : to be aware of the truth of <We know that the earth is round.>
3 : to have a practical understanding of <Her little sister already knows how to read.>
4 : to have information or knowledge <He knows all about cars.>
5 : to be or become aware <The president knew about the problem.>
6 : to be acquainted or familiar with <A taxi driver knows the city well.>
7 : to have understanding of <It's important to know yourself.> <I don't know why this happens.>
8 : to recognize the nature of <We knew them to be honest.>
Seen and Heard
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