I am certain that

USAGE SUMMARY

'I am certain that' is a correct and usable part of a sentence in written English.
You can use it when you are certain that something is true and want to express confidence in it. For example, "I am certain that the guest speaker will be able to provide us with some valuable insights."

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

I am certain that someday we will.

Columbia University

And I am certain that the F.C.I.C. would confirm that".

The New York Times

I disagree, and I am certain that I am right.

The New Yorker

Because I am certain that there is reason to fear.

The New York Times

I am certain that my dream will come true.

The Washington Post

I am certain that Eric will get the job.

The New Yorker

"I am certain that your message will reach the president.

The Washington Post

I am certain that your children do, too.

The Guardian

I am certain that I require anti-depressant medication".

The Guardian - Money

Nevertheless, I am certain that the flying-machine is coming".

The Guardian

"I am certain that it was a drone".

The Guardian

Expert writing Tips

Best practice

When expressing your opinion, avoid overusing "I am certain that" in close proximity to maintain varied and engaging language.

Common error

Avoid using "I am certain that" when the evidence is weak or non-existent. Overstating certainty can undermine your credibility.

Linguistic Context

The phrase "I am certain that" functions as a declarative statement, expressing a speaker's strong belief or conviction. It introduces a proposition that the speaker believes to be unequivocally true, as demonstrated by numerous examples in Ludwig.

Expression frequency: Very common

Frequent in

News & Media

55%

Academia

15%

Formal & Business

10%

Less common in

Science

10%

Wiki

5%

Reference

5%

Ludwig's WRAP-UP

In summary, the phrase "I am certain that" is a widely used expression to convey a strong belief or conviction. As Ludwig AI confirms, it is grammatically correct and appears frequently in various contexts, particularly in news and media. When using this phrase, ensure that your certainty is grounded in evidence to maintain credibility. While alternatives exist, such as "I am sure that" or "I am convinced that", "I am certain that" remains a powerful way to express your confidence in a statement.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I am sure that

Direct synonym, expressing a similar degree of confidence.

I am quite certain that

Adds emphasis to the certainty being expressed.

I am convinced that

Emphasizes a belief formed through reasoning or evidence.

I am positive that

Indicates a strong and unwavering belief.

I feel confident that

Combines certainty with a sense of assurance.

I have no doubt that

Expresses certainty by negating the possibility of doubt.

I can assure you that

Offers reassurance and a guarantee of truth.

I firmly believe that

Highlights the strength and depth of one's belief.

It is my conviction that

A more formal way of expressing a deeply held belief.

I am of the opinion that

Indicates a judgment based on personal assessment.

FAQs

How can I use "I am certain that" in a sentence?

Use "I am certain that" to express a strong belief or conviction. For example, "I am certain that the new policy will improve efficiency."

What are some alternatives to "I am certain that"?

You can use alternatives like "I am sure that", "I am convinced that", or "I am positive that", depending on the context.

Is "I am certain that" formal or informal?

"I am certain that" is suitable for both formal and informal contexts. However, consider using more formal alternatives like "It is my conviction that" in very formal settings.

What's the difference between "I am certain that" and "I believe that"?

"I am certain that" expresses a stronger level of conviction than "I believe that". "I believe that" indicates a personal opinion, while "I am certain that" suggests a firm and unwavering belief.