easy
I know the answer to the riddle.
What does Know mean?
Know means to understand or be aware of something.
Dictionary definition
To understand, recognize, or be aware of something.
Example sentences
Know in a sentence
medium
Good readers know when to reread a confusing sentence.
hard
Scientists know more about the ocean by observing, measuring, and asking careful questions.
Writing practice
Ready to write your own? Study the examples, then practice know in a sentence with Sentence Builder checklist feedback.
Commonly confused words
Know or no?
Compare the meanings, then choose a word for each new sentence.
Know
To have knowledge or be familiar with something.
In a sentence Do you know the way home?
No
A negative answer, or not any.
In a sentence There are no apples left.
Spot the difference Know means have knowledge. No expresses a negative answer or the absence of something.
Which word fits?
Choose know or no for each blank. Say your answer, then check why it fits.
1I ___ the answer to this riddle.
Check answer 1
know — The sentence concerns knowledge.
2There are ___ cookies left in the empty tin.
Check answer 2
no — The empty tin contains none.
Make it your ownTry the word in a sentence about your day.
Write a sentence with knowQuick practice
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Practice the meaning of Know
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does know mean?
Know means to understand, recognize, or be aware.
Practice 2
Which sentence uses know correctly?
Know is used when someone understands or has information.
Practice 3
Which word is closest in meaning to know?
Understand is close in meaning to know.
Practice complete
Nice work!
You completed 3 questions.
Pronunciation coach
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Know
Voice settings
Sounds like
NOH
Listen, then repeat the word.
Tap each sound part, then blend the whole word together.
NOH
Learn
WordKnow.
Partverb.
MeaningKnow means to understand or be aware of something.
ExampleExample: I know the answer to the riddle.
Your turn
Say Know
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Nice work—you practiced know.
Synonyms
Words like Know
understandUse when you know what something means.
recognizeUse when you know someone or something from seeing it before.
Antonyms
Opposite words
Synonym practice
Want to practice know synonyms in context? Try a Synonym Search question like "I know the answer to the riddle," then compare close word choices. Practice know synonyms.
Word family
Know word family
Related words
Explore related words
Student support
Understand Know
Hint for students
Know means to understand or be aware of something.
Common mix-up
Know is not the same as guess. Know means know means to understand or be aware of something.
Try it in class or at home
Read this model sentence: Good readers know when to reread a confusing sentence. Clue words: good, readers, reread. Underline clue words that show why know fits instead of guess. Now write one new sentence that shows know without using the word know. Ask: Does my sentence clearly show know?
Teacher prompt
Ask students to explain this model sentence: "Good readers know when to reread a confusing sentence." Why does know fit better than guess?
Learning activities
Practice Know and explore more word games
Cards labelled “Practice KNOW” keep this word in focus. Explore cards open games with other words.
Practice KNOW
Sentence Builder
Write your own sentence with this word and revise with checklist feedback.
Write a sentence with KNOW
Explore · Spelling
Spell Hive
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Explore · Definitions
Define the Word Hive
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Explore · Matching
Vocabulary Match
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Match meanings
Explore · Context
Context Clue Challenge
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Use context clues
Explore · Scramble
Scrambled Bees
Rebuild words from mixed-up letters for spelling practice.
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