1
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
Phrases
know from
: to have knowledge of
didn't know from sibling rivalry—
Penny Marshall
Penny Marshall
: in possession of exclusive knowledge or information
broadly
: well-informed
Synonyms
Examples of know in a Sentence
Verb
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.
Recent Examples on the Web
Emily Zemler, Rolling Stone, 31 Jan. 2025
Elizabeth Lail, known for Netflix’s You, just reprised her role in the Five Nights at Freddy’s sequel.
—Nellie Andreeva, Deadline, 31 Jan. 2025
Lynnette Nicholas, Essence, 15 Jan. 2025
For those in the know, the ability to play a video game in a PDF file begs a certain, extremely specific programming community question.
—Andrew Paul, Popular Science, 15 Jan. 2025
See all Example Sentences for know 
Examples are automatically compiled from online sources to
show current usage.
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Verb
Hopkins, who is well known for his own monstrous portrayal of Hannibal Lector in Silence of the Lambs, has been working frequently, including voicing a character in the two-part Netflix film Rebel Moon and forthcoming sci-fi flick Eyes in the Trees.
—Emily Zemler, Rolling Stone, 31 Jan. 2025
Elizabeth Lail, known for Netflix’s You, just reprised her role in the Five Nights at Freddy’s sequel.
—Nellie Andreeva, Deadline, 31 Jan. 2025
Noun
And, this includes staying in the know about the top books coming out each month of the year.
—Lynnette Nicholas, Essence, 15 Jan. 2025
For those in the know, the ability to play a video game in a PDF file begs a certain, extremely specific programming community question.
—Andrew Paul, Popular Science, 15 Jan. 2025
See all Example Sentences for know
Dictionary Entries Near know
Cite this Entry
“Know.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know. Accessed 3 Feb. 2025.
Copy CitationKids Definition
know
1 of 2 verb1
a
: to have understanding of
know yourself
b
: to recognize the nature of
knew them to be honest
2
a
: to recognize the identity of
knew me by my walk
b
: to be acquainted or familiar with
knows the city very well
3
a
: to be aware of the truth of
know that the earth is round
b
: to have a practical understanding of
knows how to write
4
: to have information or knowledge
ask someone who knows
5
: to be or become aware
knew about the problem
know
2 of 2 noun
: the fact of knowing : knowledge
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