completely sure that

USAGE SUMMARY

The phrase "completely sure that" is correct and usable in written English.
You can use it when expressing a strong conviction or certainty about something. Example: "I am completely sure that we will meet the project deadline."

✓ Grammatically correct

News & Media

Science

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

53 human-written examples

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

The New Yorker

Nor that, at the end, I wasn't completely sure that I understood what had happened.

The Guardian - Books

"At that point, I was completely sure that later that day, or the next day, I would try again and I would succeed," St. Aubyn said.

The New Yorker

I held her until I was completely sure that she wouldn't wake in a panic, and then for a few more seconds after that.

The New Yorker

"A lot of parents enjoy the idea of adventure camps and summer camps, but they won't send their children until they can be completely sure that they're safe.

The New York Times

Channel 4's The Big Fish Fight has provided some very interesting viewing recently, although I'm not completely sure that it has convinced the public about exactly what they should and shouldn't be eating.

Independent

Human-verified similar examples from authoritative sources

Similar Expressions

7 human-written examples

I never mentioned that I wasn't completely sure about that guy -- that even though he's surely the character in the Torah everyone least identifies with, I'm not all too convinced there's anyone even there to do the understanding.

Huffington Post

She added that another common solution — leaving money to a family member to care for the disabled person — creates unnecessary uncertainty at an already fraught time: "You're never completely sure what that person will do after you're gone".

The New York Times

I'm not really completely sure what that means.

TechCrunch

I'm not completely sure about that.

Huffington Post

We are not completely sure why that is the case.

Huffington Post

Expert writing Tips

Best practice

Use "completely sure that" when you want to express a very strong sense of certainty and leave no room for doubt. Make sure the context warrants such a strong assertion.

Common error

Avoid using "completely sure that" if you only have partial evidence or a hunch. It's better to use qualifiers like "pretty sure" or "fairly certain" when the situation is less clear-cut.

Linguistic Context

The phrase "completely sure that" functions as an adjectival phrase that modifies a clause, expressing a strong subjective assessment of certainty. Ludwig AI confirms its grammatical correctness and usability.

Expression frequency: Very common

Frequent in

News & Media

46%

Wiki

21%

Science

21%

Less common in

Formal & Business

7%

Reference

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "completely sure that" is a grammatically correct and frequently used expression to convey a strong sense of certainty. According to Ludwig, it is most commonly found in News & Media, Wiki, and Science contexts. While powerful, it's important to use this phrase judiciously, ensuring that the level of certainty matches the available evidence. Alternatives like "absolutely certain that" or "entirely convinced that" offer similar meanings with slight variations in emphasis or formality.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

absolutely certain that

Emphasizes a very high degree of certainty with a slightly more formal tone.

entirely convinced that

Focuses on the state of being fully persuaded or convinced about something.

fully confident that

Highlights assurance and belief in a positive outcome or truth.

utterly persuaded that

Similar to "entirely convinced", but may imply a stronger influence or change of mind.

unequivocally sure that

Indicates that there is no doubt or ambiguity whatsoever.

positive that

A more concise way to express certainty, suitable for less formal contexts.

certain beyond doubt that

Stresses the absence of any uncertainty or question.

firmly believe that

Expresses a strong conviction based on personal belief.

have no doubt that

Indicates a lack of uncertainty, though perhaps less forceful than "completely sure".

assured that

Suggests confidence based on guarantees or assurances received.

FAQs

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

You can use "completely sure that" to express a strong sense of conviction or certainty about something. For example: "I am "completely sure that" we will meet the project deadline".

What phrases are similar to "completely sure that"?

Alternatives include phrases like "absolutely certain that", "entirely convinced that", or "fully confident that", which also express a high degree of certainty.

When is it appropriate to use "completely sure that"?

Use "completely sure that" when you have a strong basis for your conviction and want to convey a sense of unwavering certainty. Avoid using it when you only have a slight inclination or incomplete evidence.

Is "completely sure that" too strong in some situations?

Yes, in contexts where absolute certainty is not possible or expected, using "completely sure that" may sound overly assertive or even arrogant. Consider using phrases like "pretty sure that" or "fairly certain that" instead.