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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
i am certain about
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I am certain about" is correct and usable in written English.
You can use it when expressing confidence or assurance regarding a particular fact or situation. Example: "I am certain about the accuracy of the data we collected for the project."
✓ Grammatically correct
News & Media
Academia
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
10 human-written examples
It was, I am certain, about six or eight minutes.
News & Media
One way or another, he told his sister: "I am certain about my death".
News & Media
There was a forgery and I am certain about what I am saying".
News & Media
More talks are expected soon, with the player saying: "I would like to stay here a long, long time, I am certain about that.
News & Media
Pickles told the BBC Today programme: "What I am certain about is a free society is vulnerable to an unexplained, heavy violent attack, whether it was, as our dear friends in Norway faced a couple of years ago, a white supremacist or whether what we faced on the streets of Woolwich, a blasphemy and distortion of Islam," he said.
News & Media
The Tory minister told Radio 4: What I am certain about is a free society is vulnerable to an unexplained, heavy violent attack, whether it was as our dear friends in Norway faced a couple of years ago a white supremacist or whether what we faced on the streets of Woolwich, a blasphemy and distortion of Islam.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
"One thing I'm certain about is that there will be less full-time equivalent staff working for KCC into the future".
News & Media
"There is one thing I'm certain about: There won't be printed newspapers in 20 years," he said in a November interview with German newspaper Berliner Zeitung.
News & Media
"I'm certain about that.
News & Media
I may not get everything right all the time, but I'm certain about this one.
News & Media
And on the 30th, when I saw so many people in the streets, I was certain about it.
News & Media
Expert writing Tips
Best practice
Use "i am certain about" to express a strong conviction based on evidence or experience. This phrase is particularly effective when you want to convey a sense of reliability and confidence in your statement.
Common error
Avoid using "i am certain about" when you actually mean "i think it's likely". Certainty implies a high degree of confidence, whereas likelihood suggests a probability that may not be definite.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "i am certain about" functions as an assertion of confidence. It's used to convey a firm belief or conviction regarding a particular matter. As confirmed by Ludwig, the phrase is grammatically correct and conveys confidence.
Frequent in
News & Media
60%
Academia
25%
Science
15%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "i am certain about" is a grammatically correct and commonly used phrase for expressing strong conviction or assurance. Ludwig examples show its prevalence across diverse contexts, primarily in News & Media, Academic and Scientific domains. When writing, remember that this phrase should be used to express certainty stemming from real facts or strong beliefs.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
i am sure about
Uses "sure" instead of "certain", indicating a very slight difference in the degree of conviction.
i am positive about
Replaces "certain" with "positive", suggesting strong confidence.
i have no doubt about
Expresses certainty by negating doubt, changing the sentence structure.
i am convinced about
Emphasizes that the certainty stems from being persuaded or convinced.
i firmly believe in
Shifts the focus to a belief, which implies a strong conviction.
i am confident about
Substitutes "certain" with "confident", indicating assurance.
i am persuaded that
Highlights the persuasive aspect leading to certainty.
i can assure you that
Formally assures someone, conveying a high degree of certainty.
i ascertain that
Indicates certainty derived from verification or discovery.
i am of the firm opinion that
Uses a more formal structure to express certainty as a strongly held opinion.
FAQs
How can I use "i am certain about" in a sentence?
Use "i am certain about" to express strong confidence or assurance about something. For example: "I am certain about the accuracy of these findings."
What can I say instead of "i am certain about"?
You can use alternatives like "i am sure about", "i am positive about", or "i have no doubt about depending on the context".
Is it more formal to say "i am certain about" or "i am sure about"?
"I am certain about" and "i am sure about" are often interchangeable, but "i am certain about" can come across as slightly more formal, emphasizing a stronger conviction.
What's the difference between "i am certain about" and "i am confident about"?
While both phrases express assurance, "i am certain about" focuses on the factual or objective assurance, whereas "i am confident about" often relates to a belief in one's abilities or a positive expectation about an outcome.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested