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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.

“We’re not smart enough to know if that’s going to happen or if it’s not going to happen,” said Matthew McLennan, a portfolio manager at First Eagle Investments.

From The Wall Street Journal • Apr. 22, 2026

This unique material, Dai added, is a good reminder of how much we don't know about the quantum realm.

From Science Daily • Apr. 22, 2026

“We have to stay scientific — what’s the evidence behind it? As long as women understand that we don’t know if there’s data to support some of the things they’re doing,” she says.

From Los Angeles Times • Apr. 22, 2026

Since shadow docket rulings are unsigned, we can’t know for certain the usual tally of supporting and opposing justices.

From Salon • Apr. 22, 2026

For longer than I’d been alive, only the right people ever seemed to know about it.

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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