easy
Are you sure this is your notebook?
What does Sure mean?
confident or certain.
Dictionary definition
Confident that something is true, correct, or likely to happen.
Example sentences
Sure in a sentence
medium
I checked my answer twice so I could feel sure.
hard
A careful reader is not sure about an inference until the text gives enough evidence.
Writing practice
Ready to write your own? Study the examples, then practice sure in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Sure
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does sure mean?
Sure means confident or certain.
Practice 2
Which word is closest in meaning to sure?
Certain is close in meaning to sure.
Practice 3
Which word is a useful contrast for sure?
Unsure contrasts with sure in this context.
Practice complete
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You completed 3 questions.
Pronunciation coach
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Sure
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Learn
WordSure.
Partadjective.
MeaningSure means confident or certain.
ExampleExample: Are you sure this is your notebook?
Your turn
Say Sure
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Ready when you are.
Nice work—you practiced sure.
Synonyms
Words like Sure
Antonyms
Opposite words
Synonym practice
Want to practice sure synonyms in context? Try a Synonym Search question like "The speaker gave a confident answer to the question," then compare close word choices. Practice sure synonyms.
Word family
Sure word family
Base word
sure
adjective
surer
More sure, though more sure is also common.
adjective
surest
Most sure.
adverb
surely
In a sure or certain way.
Related words
Explore related words
Student support
Understand Sure
Hint for students
confident or certain.
Common mix-up
Sure is not the same as unsure. Sure means confident or certain.
Try it in class or at home
Read this model sentence: I checked my answer twice so I could feel sure. Clue words: checked, answer, twice. Underline clue words that show why sure fits instead of unsure. Now write one new sentence that shows sure without using the word sure. Ask: Does my sentence clearly show sure?
Teacher prompt
Ask students to explain this model sentence: "I checked my answer twice so I could feel sure." Why does sure fit better than unsure?
Learning activities
Practice Sure and explore more word games
Cards labelled “Practice SURE” keep this word in focus. Explore cards open games with other words.
Practice SURE
Sentence Builder
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Write a sentence with SURE
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