I am completely sure

USAGE SUMMARY

The phrase "I am completely sure" is correct and usable in written English.
You can use it when expressing a strong conviction or certainty about something. Example: "After reviewing all the evidence, I am completely sure that we made the right decision."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

As for the inspectors, they should stay, even though I am completely sure Iraq doesn't have anything.

The Guardian

But I truly did play his wife; all at once I am completely sure of this, for I have recalled an odd detail.

The New Yorker

"The one thing I am completely sure of is that you cannot be infected with H.I.V. because the virus was never present in the manufacturing process," Dr. Graham said.

The New York Times - Health

I am completely sure this scene makes sense in context.

TechCrunch

Carmelo Ezpeleta, head of rights holders Dorna, told BBC Sport: "He thinks he can still win and I am completely sure that he can".

BBC

Here are excerpts of what he said in a pre-recorded interview on Ukrainian TV channel ICTV: "I am completely sure that this is an example that our country and the whole world saw, an example of a coup d'etat.

BBC

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

"I'm completely sure".

The New Yorker

I was completely sure they would be sexually harassed.

The New Yorker

"I'm completely sure most people support it," he said.

The New York Times

But when that happened, I was completely sure that I'm on the right track.

The New Yorker

I want you to take what I'm completely sure is something terrible and transform it.

The New Yorker

Expert writing Tips

Best practice

Use "I am completely sure" when you want to express a strong sense of conviction about something. Ensure that your subsequent statements align logically with this level of certainty.

Common error

Avoid using "I am completely sure" when you lack sufficient evidence or when expressing subjective opinions. Overstating your certainty can undermine your credibility if proven wrong.

Linguistic Context

The phrase "I am completely sure" functions as an assertive expression, indicating a high degree of confidence or certainty. Ludwig AI states it is usable in written English to express a strong conviction. Examples show its use in contexts ranging from confirming facts to expressing beliefs.

Expression frequency: Uncommon

Frequent in

News & Media

43%

Formal & Business

29%

Science

14%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "I am completely sure" is a grammatically sound and assertively confident expression used to convey a strong belief or certainty. Ludwig AI confirms that it is correct and well usable in written English. It is most frequently found in news and media contexts, as well as formal business settings. When using this phrase, it is important to ensure that your claim is supported by evidence to maintain credibility. Alternative phrases, such as "I am absolutely certain" or "I have no doubt", can be used to express similar levels of conviction.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I am absolutely certain

Replaces "completely sure" with "absolutely certain" for increased emphasis.

I am certain without a doubt

Adds emphasis by explicitly stating the absence of doubt.

I am entirely convinced

Substitutes "completely sure" with "entirely convinced" focusing on the state of being persuaded.

I am sure beyond any shadow of a doubt

Adds a more dramatic and emphatic tone to the expression of certainty.

I am fully persuaded

Changes the phrasing to highlight the state of being convinced, suggesting a settled belief.

I have no doubt

Expresses certainty by negating doubt, implying a firm conviction.

I am positive

Uses "positive" as a synonym for "sure", offering a more concise expression of certainty.

I strongly believe

Shifts from absolute certainty to a strong belief, which may imply slightly less conviction.

It is my firm belief

Changes the structure to emphasize the firmness of the belief.

I am of the firm opinion

Replaces the feeling of certainty with an opinion, still held strongly.

FAQs

How can I use "I am completely sure" in a sentence?

You can use "I am completely sure" to express a strong belief or conviction. For example, "After reviewing the data, "I am completely sure" that our strategy will succeed."

What are some alternatives to "I am completely sure"?

Alternatives include "I am absolutely certain", "I am entirely convinced", or "I have no doubt". The best choice depends on the specific nuance you want to convey.

Is there a difference between "I am completely sure" and "I am pretty sure"?

Yes, "I am completely sure" indicates a very high level of confidence, while "I am pretty sure" suggests a moderate level of confidence. Use "I am pretty sure" when you're fairly confident but not entirely certain.

When is it inappropriate to use "I am completely sure"?

It's best to avoid "I am completely sure" when discussing speculative matters or subjective opinions where absolute certainty is unlikely. It's also inappropriate when you lack sufficient evidence to support such a strong claim.