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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.

Need to Know: The markets are in the early stages of pricing in stagflation.

From MarketWatch • May 4, 2026

His voice was notably featured on the tracks “You Know That I Love You,” “Winning,” “All I Ever Wanted” and “Hold On.”

From Los Angeles Times • May 3, 2026

Maya Angelou’s autobiography “I Know Why the Caged Bird Sings” was included in the purge; Adolf Hitler’s “Mein Kampf” was not.

From Salon • May 3, 2026

After all, it is a snappy cowpuncher variation on Woody Guthrie’s “Dusty Old Dust/So Long It’s Been Good to Know Yuh” with Ramblin’ Jack Elliott, the folk legend’s old musical partner, singing along.

From The Wall Street Journal • Apr. 2, 2026

Know it like you used to say that Alex was your “one true love.”

From "P.S. I Miss You" by Jen Petro-Roy

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

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!