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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
I am certain about that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The sentence "I am certain about that" is correct and usable in written English.
You can use it when you are expressing certainty or conviction about something. For example: "I think it will rain this weekend, but I'm not sure. I am certain about that, however."
✓ Grammatically correct
News & Media
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
1 human-written examples
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
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
"I had the pace to be on pole, I'm certain about that," said Hamilton, who will now start in ninth.
News & Media
Mr. Obama said: "What I'm certain about is that people are disenchanted with a highly ideological Republican Party that believes tax cuts are the answer to every problem, and lack of regulation and oversight is always going to generate economic growth, and unilateral intervention around the world is the best approach to foreign policy.
News & Media
"At the moment, the only thing I'm certain about is that I'll vote for Trump and hold my nose and pray," Michael Epstein, a board member of the RJC, told the Guardian, adding that he intended to put his energies into helping GOP congressional candidates.
News & Media
"What I'm certain about is that he did not make a firm commitment yesterday," Sessions told CBS. "But he is absolutely committed to the first thing that has to be done, and that's end the lawlessness to protect Americans from danger.
News & Media
"One thing I'm certain about is that there will be less full-time equivalent staff working for KCC into the future".
News & Media
What I am certain about, though, is that he has a massive England future.
News & Media
"I'm certain about that.
News & Media
While I continue to learn, there is one thing that I am certain about.
News & Media
All I was certain about was that Mike Daisey was just as confused and unsure as the rest of us.
News & Media
"The only thing I was certain about was that I could lure any man I wanted into my bed," she writes.
News & Media
Expert writing Tips
Best practice
To enhance clarity, follow the phrase with a clear explanation of what "that" refers to, especially in complex discussions.
Common error
While acceptable, avoid overuse in highly formal or academic writing. Opt for more nuanced expressions of certainty like "it is evident" or "the evidence suggests" to maintain a sophisticated tone.
Source & Trust
79%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I am certain about that" functions as an expression of strong affirmation or conviction. It asserts a firm belief in the truth or validity of a preceding statement or situation. As Ludwig AI confirms, it's a correct and usable expression.
Frequent in
News & Media
55%
Science
15%
Huffington Post
10%
Less common in
Formal & Business
5%
Wiki
5%
Science & Research
5%
Ludwig's WRAP-UP
The phrase "I am certain about that" is a common and grammatically sound way to express strong conviction or belief. As Ludwig AI points out, it’s suitable for many contexts but might need adjustment for highly formal writing where alternatives like "it is evident" may be more appropriate. The analysis of usage patterns shows it frequently appears in news and media sources. When writing, remember that while emphatic, clarity is key; ensuring the "that" is clearly referenced will enhance understanding. For scenarios where "I am certain about that" feels too direct, consider alternatives such as "I am sure of that" or "I have no doubt about that".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I am sure of that
Uses "sure" instead of "certain", which is a direct synonym.
I'm positive about that
Replaces "certain" with "positive", indicating a strong belief.
I'm convinced of that
Emphasizes a state of being persuaded or fully believing something.
I have no doubt about that
Expresses certainty by negating doubt.
I'm absolutely sure of it
Adds emphasis with "absolutely" and replaces "that" with "it".
I can guarantee that
Offers a guarantee, implying a high level of certainty.
That is a certainty
Transforms the phrase into a statement of fact.
I'm quite certain about that
Adds a modifier to soften the certainty.
It's a sure thing
Informal expression indicating a guaranteed outcome.
You can bet on it
An informal expression, suggesting high confidence.
FAQs
How can I use "I am certain about that" in a sentence?
Use "I am certain about that" to express a strong belief or conviction. For example, "I believe the project will succeed, and "I am certain about that"."
What are some alternatives to "I am certain about that"?
You can use alternatives like "I am sure of that", "I am positive about that", or "I have no doubt about that" depending on the context.
Is "I am certain about that" formal or informal?
"I am certain about that" is generally considered neutral and can be used in both formal and informal contexts, though more formal alternatives may be preferred in academic or professional writing.
What's the difference between "I am certain about that" and "I think so"?
"I am certain about that" expresses a strong conviction, while "I think so" indicates a belief but with a degree of uncertainty. The former conveys more assurance than the latter.
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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
79%
Authority and reliability
4.1/5
Expert rating
Real-world application tested