know

verb
\ ˈnō \
knew\ ˈnü also  ˈnyü \; known\ ˈnōn \; knowing

Definition of know

 (Entry 1 of 2)

transitive verb

1a(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
2a : 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

intransitive verb

1 : to have knowledge
2 : to be or become cognizant sometimes used interjectionally with you especially as a filler in informal speech
know from
: to have knowledge of didn't know from sibling rivalry— Penny Marshall

know

noun

Definition of know (Entry 2 of 2)

in the know
: in possession of exclusive knowledge or information broadly : well-informed

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Other Words from know

Verb

knowable \ ˈnō-​ə-​bəl \ adjective
knower \ ˈnō-​ər \ noun

Synonyms for know

Synonyms: Verb

comprehend, grasp, understand

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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.
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Recent Examples on the Web: Verb

Experts don’t know why this affects some people and not others and have found that simply continuing with antibiotic treatment can do more harm to a person’s system than good, according to the National Institute of Allergy and Infectious Diseases. Kate Sheridan, SELF, "Here’s Exactly What to Do if a Tick Bites You," 14 July 2018 Today, Kardashian West is known for switching up her hair often, wearing butt-length extensions and wigs in lots of different colors and styles. Lindsey V Thompson, Allure, "Kim Kardashian West Shares a Throwback Picture Minus Her Hair Extensions and Fake Lashes," 13 July 2018 That ruling overturned the 2015 decision by the state labor board, formally known as the Public Employment Relations Board. David Garrick, sandiegouniontribune.com, "If state Supreme Court rules against San Diego on pensions, it could could cost city millions," 14 July 2018 The home, known as the house on bluff, also has high tech features. David Gleisner, Daily Southtown, "Rare glass house carved into hillside hits the market in Olympia Fields," 14 July 2018 Their cell membranes, for example, are made up of two different kinds of fatty molecules, known as lipids. Prachi Patel, Scientific American, "Engineered Microbe Shakes Up the Tree of Life," 13 July 2018 The Armenian Shadow Puppet Theater, known as Karagyoz, was especially popular in the 18th century. Allison Keyes, Smithsonian, "Illuminating the Shadowy Art of Armenian Puppet Theater," 13 July 2018 World Peace, formerly known as Ron Artest, was ejected 11 times during his 17 year NBA career. Joseph Spears, Indianapolis Star, "Metta World Peace ejected from game after punting the ball into the crowd," 13 July 2018 The 52-year-old site, officially known as Monarch Hill Renewable Energy Park, is inching toward being full. Anne Geggis, Sun-Sentinel.com, "Mount Trashmore, the landfill that's over 20 stories, will grow bigger and taller," 13 July 2018

Recent Examples on the Web: Noun

But what does the public know so far about baby Sussex-to-be? Vogue, "Everything We Know About Prince Harry and Meghan Markle’s Royal Baby," 17 Jan. 2019 Even people who only watch football on TV know that college games are unbearably long. Andy Benoit, SI.com, "NFL and College Football Are Not the Same Game," 11 July 2018 The show is told in several timelines, but rarely does the viewer know which is on-screen at any moment. Travis M. Andrews, chicagotribune.com, "Is talking about 'Westworld' more fun than watching 'Westworld'?," 25 June 2018 The Jacobs had know McCarthy since their youth in South Sacramento. Anita Chabria, sacbee, "Who killed this Sacramento family three decades ago? Police offer $50,000 for clues," 16 June 2018 When Garcetti invited the Dreamers to speak, one young man told of trouble getting a new know-your-rights app listed in the App Store. Chanan Tigay, GQ, "Eric Garcetti Is the Anti-Trump, Pro–Star Wars Man We Need," 12 June 2018 Pugh detailed the gifts in her annual financial disclosure, a transparency tool designed to let the public know about any conflicts of interest city officials might have. Ian Duncan, baltimoresun.com, "Fruits, flowers and a financier's cakes: Mayor Pugh discloses gifts in annual transparency filing," 18 May 2018 More help: Horse racing terms to keep you in the know for Kentucky Oaks and Kentucky Derby 2018 What about fillies? Danielle Lerner, The Courier-Journal, "Kentucky Derby 2018 is here, and there's a lot to know by May 5. We break it down," 3 Apr. 2018 Yes, athleisure and comfort remain important drivers of fashion, but there is a growing interest in craftsmanship and technical know-how. Laird Borrelli-persson, Vogue, "Couture Is All About the Details—Glorious Details. Here, Our 45 Best Close-Ups from the 2018 Collections," 29 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'know.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of know

Verb

before the 12th century, in the meaning defined at transitive sense 1a(1)

Noun

1592, in the meaning defined above

History and Etymology for know

Verb and Noun

Middle English, from Old English cnāwan; akin to Old High German bichnāan to recognize, Latin gnoscere, noscere to come to know, Greek gignōskein

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Time Traveler for know

The first known use of know was before the 12th century

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More Definitions for know

know

verb
\ ˈnō \
knew\ ˈnü, ˈnyü \; known\ ˈnōn \; knowing

Kids Definition of know

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.

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More from Merriam-Webster on know

Thesaurus: All synonyms and antonyms for know

Spanish Central: Translation of know

Nglish: Translation of know for Spanish Speakers

Britannica English: Translation of know for Arabic Speakers

Comments on know

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