easy
I am certain this is the right page.
What does Certain mean?
Sure.
Dictionary definition
Sure about something because you have enough confidence or proof.
Example sentences
Certain in a sentence
medium
She felt certain after checking each step.
hard
Writers should sound certain only when their evidence is strong.
Writing practice
Ready to write your own? Study the examples, then practice certain in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Certain
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does certain mean?
Certain means sure about something because you have enough confidence or proof.
Practice 2
Which word or phrase is closest in meaning to certain?
Sure is close in meaning to certain in this context.
Practice 3
Which word or phrase is a good contrast to certain?
Unsure gives a useful opposite or contrast to certain.
Practice complete
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Pronunciation coach
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Certain
Voice settings
Sounds like
sur · tn · strongest beat: sur
Tap each sound part, then blend the whole word together.
Learn
WordCertain.
Partadjective.
MeaningCertain means Sure.
ExampleExample: I am certain this is the right page.
Word breakdown
2 syllables. Say each part, then blend the word.
- Syllables
- sur · tn
- Strongest beat
- sur
- Ending
- tn
- Tip
- Put a little extra energy on sur.
Your turn
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Synonyms
Words like Certain
Antonyms
Opposite words
Synonym practice
Want to practice certain synonyms in context? Try a Synonym Search question like "I am certain the answer is correct," then compare close word choices. Practice certain synonyms.
Word family
Certain word family
Base word
certain
adjective
certain
Base form.
Related words
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Student support
Understand Certain
Hint for students
Certain means sure or known to be true. It can also mean particular, as in 'certain books.'
Common mix-up
Certain is not the same as possible. Certain means sure; possible means something could happen but is not sure.
Try it in class or at home
Write one sentence that shows certain without using the word certain. Model sentence: She was sure her answer was correct because she checked it twice. Clue words: sure, answer was correct, checked it twice Now try your own sentence. Ask: Does my sentence show being sure, not just hoping?
Teacher prompt
Ask students to explain this model sentence: 'I am certain that I locked the door.' Why does certain fit better than uncertain?
Learning activities
Practice Certain and explore more word games
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Sentence Builder
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Synonym Search
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