was certain that

USAGE SUMMARY

The phrase "was certain that" is correct and usable in written English.
You can use it to express a strong belief or conviction about something in the past. Example: "She was certain that she had locked the door before leaving the house."

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

56 human-written examples

I was certain that he did not.

The New Yorker

Her husband was certain that she hadn't.

The New York Times

He was certain that his role in "O.G".

The New Yorker

But he was certain that it was painful.

The New York Times - Sports

Ghaninejad was certain that sanctions had already bitten.

The New Yorker

Bella was certain that Peipei would help her.

The New Yorker

I was certain that there had been a coup".

The Guardian

Human-verified similar examples from authoritative sources

Similar Expressions

4 human-written examples

'I'm certain that's true.

The Guardian

Nothing is certain – that's the number one cancer cliché.

The Guardian - Lifestyle

Even if nothing else is certain, that is.

The Washington Post

One thing is certain, that's a very cool poster.

Forbes

Expert writing Tips

Best practice

Use "was certain that" to clearly convey a strong belief or conviction about a past event or situation. Ensure the context supports the assertion and avoid overusing it in contexts where a milder expression of belief would suffice.

Common error

Avoid using "was certain that" when the evidence is weak or the situation is ambiguous. Overstating your certainty can undermine your credibility if the belief proves to be unfounded.

Linguistic Context

The phrase "was certain that" functions as a declarative expression, indicating a past state of strong belief or conviction. Ludwig AI confirms its correct usage in expressing certainty.

Expression frequency: Very common

Frequent in

News & Media

77%

Academia

12%

Science

11%

Less common in

Ludwig's WRAP-UP

The phrase "was certain that" is a grammatically sound and frequently employed expression to denote a strong past conviction. Ludwig AI confirms its correct usage. Its communicative purpose lies in asserting a state of confidence regarding a past event. While versatile across registers, it's predominantly found in news and media contexts, according to the example sentences, and remember to ensure that your certainty aligns with the available evidence to maintain credibility in your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

was convinced that

Replaces "certain" with "convinced", implying a strong belief based on evidence or reasoning.

was sure that

Uses "sure" instead of "certain", indicating a firm belief without necessarily implying absolute proof.

was positive that

Emphasizes the lack of doubt by using the adjective "positive".

felt confident that

Shifts the focus to a feeling of confidence, rather than a statement of certainty.

had no doubt that

Expresses the absence of doubt, reinforcing the conviction.

believed strongly that

Highlights the strength of the belief, rather than the certainty.

was of the opinion that

Indicates a belief based on personal judgment or assessment.

firmly believed that

Emphasizes the steadfastness of the belief.

was under the impression that

Suggests a belief based on an understanding or interpretation of something.

had every reason to believe that

Justifies the belief by indicating supporting evidence or circumstances.

FAQs

What can I say instead of "was certain that"?

You can use alternatives like "was convinced that", "was sure that", or "felt confident that" depending on the nuance you want to convey.

Is "was certain of" grammatically correct?

Yes, "was certain of" is grammatically correct. For example, "She was certain of her success". This is different from "was certain that", which is followed by a clause.

How to use "was certain that" in a sentence?

Use "was certain that" to express a strong belief about something in the past. For example, "I was certain that I had locked the door".

What's the difference between "was certain that" and "believed that"?

"Was certain that" implies a stronger conviction than "believed that". While both express a belief, "was certain that" suggests a higher degree of confidence and conviction. Someone might "believed that" something was true, but they are much more sure about something when they "was certain that" something was true.