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Definitions

know

[noh] / noʊ /
VERB
understand information
Synonyms
STRONGEST
appreciate experience have learn notice perceive realize recognize see
STRONG
apperceive apprehend cognize comprehend differentiate discern discriminate distinguish fathom grasp ken prize undergo
WEAK
be acquainted be cognizant be conversant in be informed be learned be master of be read be schooled be versed feel certain get the idea have down pat have information have knowledge of keep up on on top of
Antonyms
STRONGEST
ignore miss misunderstand neglect overlook
STRONG
confuse mix up not get
WEAK
be ignorant forget misinterpret
VERB
be familiar with
Synonyms
STRONGEST
experience feel identify see
STRONG
associate fraternize savor sustain taste undergo
WEAK
be acquainted with be friends with get acquainted have dealings with
Antonyms
STRONG
abstain
WEAK
be ignorant forget misinterpret misunderstand

Usage

What are other ways to say know? To know something is to be aware of it as a fact or truth: He knows the basic facts of the subject. I know that he agrees with me. To comprehend is to know something thoroughly and to perceive its relationships to certain other ideas, facts, etc. To understand is to be fully aware not only of the meaning of something but also of its implications: I could comprehend all he said, but did not understand that he was joking.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Their relatives do not know whether they are alive or dead."

From Barron's • Apr. 23, 2026

“We don’t know when it’s going to end,” he told Davy repeatedly.

From The Wall Street Journal • Apr. 23, 2026

Little expects them to get promoted again immediately but added: "How do you go about signing the right players for the Premier League next time? I really don't know, it's tough."

From BBC • Apr. 22, 2026

The “Storage Wars” alum then addressed cyberbullies for their treatment of public figures, saying, “Just because you watch us on television doesn’t mean you know us. You never know what demons somebody faces.”

From Los Angeles Times • Apr. 22, 2026

My mom raised me to know when to keep my sometimes-sassy mouth shut.

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith

Vocabulary lists containing know

Words from "Miss Alaineus, A Vocabulary Disaster" by Debra Frasier

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Spelling Practice 1, Unit 3

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Spelling Practice, Unit 8

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