I was not certain

USAGE SUMMARY

The phrase "I was not certain" is correct and usable in written English.
You can use it when expressing doubt or lack of confidence about a situation or information. Example: "When asked about the project's timeline, I was not certain if we would meet the deadline."

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

16 human-written examples

But I was not certain.

The New York Times

I was not certain he would be pleased.

The New York Times - Magazine

I was not certain I was right about those things at the time.

The New York Times

I was not certain how much it might be, or where it was going to arrive, but I saw it riding down a long arc like a rainbow.

The New Yorker

In the introduction to his 1995 book, "Neoconservatism: The Autobiography of an Idea," Mr. Kristol explained how it affected his thinking: I was not certain of its economic merits but quickly saw its political possibilities.

The New York Times

I was not certain where the Fabian and advanced Nesbit stood at the end of The Treasure Seekers, when almost all the Bastables' benefactors are invited to a Christmas party, except the moneylender and the butcher.

The Guardian - Books

Human-verified similar examples from authoritative sources

Similar Expressions

44 human-written examples

I wasn't certain of succeeding".

The Guardian - Lifestyle

"I wasn't certain, and I'm still not certain, whether I wanted children," she says.

The New Yorker

I wasn't certain I could improve on it.

The Guardian

I believe I dined unrecognized, although I wasn't certain.

The New York Times - Travel

I struggled with thosewords, because I wasn't certain they were true.

The New York Times - Books

Expert writing Tips

Best practice

Use "I was not certain" to introduce a contrasting perspective or alternative explanation to show balanced thinking.

Common error

Avoid repeatedly using "I was not certain" in close succession without offering clarifying details. Vary your language to maintain reader engagement and convey nuances in your uncertainty.

Linguistic Context

The phrase "I was not certain" functions as a statement of subjective uncertainty. It indicates a lack of complete confidence or sureness about a particular fact, situation, or belief. As confirmed by Ludwig, it is correct and usable in written English.

Expression frequency: Common

Frequent in

News & Media

75%

Academia

19%

Science

6%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "I was not certain" is a common and grammatically sound phrase used to express a lack of complete confidence or sureness. As Ludwig AI confirms, it is correct to use in writing. The phrase is versatile, appearing in various contexts, from News & Media to Academia, with a neutral register. When using the phrase, providing context or explaining the reason for your uncertainty is best practice. Consider alternatives like "I wasn't sure" or "I was unsure" for stylistic variation.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I wasn't sure

Uses a contraction and a more direct synonym for "certain".

I was unsure

Replaces "not certain" with the single word "unsure", simplifying the phrasing.

I had my doubts

Expresses uncertainty through the idiom of having doubts.

I couldn't be sure

Emphasizes the inability to confirm something with certainty.

I wasn't positive

Replaces "certain" with "positive", indicating a lack of definite knowledge.

I wasn't convinced

Indicates a lack of persuasion or belief.

I felt doubtful

Emphasizes the feeling of doubt associated with the situation.

I lacked confidence

Focuses on the absence of confidence in a particular outcome or situation.

I remained skeptical

Highlights a questioning or doubting attitude.

I hesitated to believe

Expresses reluctance or reservation in accepting something as true.

FAQs

What can I say instead of "I was not certain"?

You can use alternatives like "I wasn't sure", "I was unsure", or "I had my doubts" depending on the context.

How to use "I was not certain" in a sentence?

Use "I was not certain" to express doubt or a lack of confidence about something. For example, "I was not certain if the project would be successful."

Which is correct, "I was not certain" or "I wasn't certain"?

"I was not certain" and "I wasn't certain" are both correct. "I wasn't certain" is a contraction and is more informal.

What's the difference between "I was not certain" and "I was uncertain"?

While both phrases convey a lack of certainty, "I was not certain" directly negates certainty, whereas "I was uncertain" uses a synonym for "unsure". The difference is very subtle, and they are often interchangeable.