be fully sure of

USAGE SUMMARY

The phrase "be fully sure of" is correct and usable in written English.
You can use it when expressing a strong level of certainty or confidence about something. Example: "Before making a decision, I need to be fully sure of the facts presented."

✓ Grammatically correct

News & Media

Wiki

Science

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

What we don't know is what the inspirations for Alice in Wonderland and Peter Pan, respectively, actually said to one another, any more than we can be fully sure of the content of those private audiences between Elizabeth II and her country's political leaders.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

54 human-written examples

Here's a hint: if you have to ask her to let you be the boss for a while, it means SHE is the dominant one :) Aries also love 'the chase' but won't chase unless they are fully sure of the relationship in hand.

WikiHow

We were doing things in a fairly ambitious, somewhat arrogant, way and were not fully sure of how long or complicated it was gonna get.

Vice

Everyone, no matter how old, would be overjoyed to give us directions, even when they weren't fully sure of them.

Huffington Post

SIgn up for the best of VICE, delivered to your inbox daily.

Vice

Sure, many of those won't be fully kosher online identities.

TechCrunch

Make sure that Medical Evacuation Insurance is included to the destination of your choice and be fully prepared.

Huffington Post

A sweatshirt would have been less upsetting to a seven-year-old, but, to tell you the truth, I'm not sure he was fully conscious of the fact that I was still there.

The New Yorker

I make sure pupils are fully aware of the big bang theory, the age of the Earth and the theory of evolution by natural selection, among other topics.

The Guardian - Opinion

Equally valid choices, but make sure you're fully aware of what you're signing up for before you pick up the pen.

The Guardian - Money

Asked if Mr Bercow had actually been asked to participate in the project, a Downing Street spokesman said: "I am sure he is fully supportive of our efforts".

Independent

Expert writing Tips

Best practice

When using "be fully sure of", ensure the context clearly indicates what you are certain about. This phrase is most effective when followed by a specific detail or a 'that' clause.

Common error

Avoid using "be fully sure of" when you actually mean 'believe' or 'expect'. This phrase communicates a high degree of confidence that may not be warranted in all situations.

Linguistic Context

The phrase "be fully sure of" functions as a verb phrase expressing a state of certainty or confidence. It is typically followed by a noun phrase or a 'that' clause specifying the object of certainty. As Ludwig AI confirms, the phrase is correct and usable.

Expression frequency: Rare

Frequent in

News & Media

33%

Wiki

33%

Science

34%

Less common in

Formal & Business

0%

Academia

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, "be fully sure of" is a grammatically correct phrase used to express a high degree of confidence or certainty. While relatively rare in occurrence, as noted by Ludwig AI, it finds usage across diverse contexts, including news, general knowledge and scientific writing. To enhance your writing precision, remember that this expression must be followed by a clause or noun phrase. Additionally, alternatives such as "be completely certain of" or "be entirely confident in" offer nuanced options. Finally, avoid overstating your confidence when using this phrase; reserve it for situations where your certainty is genuinely warranted.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

be completely certain of

Replaces "fully sure" with a stronger emphasis on the absence of doubt.

be entirely confident in

Focuses on confidence rather than certainty, suggesting trust in something's reliability.

be absolutely positive about

Emphasizes a lack of any uncertainty or reservation.

be convinced of

Highlights a state of being persuaded or assured.

have no doubt about

Expresses certainty by negating the presence of doubt.

be certain beyond a doubt

Adds emphasis to the certainty, reinforcing the absence of any possible doubt.

be sure without question

Implies a level of confidence that eliminates any need for questioning.

be positive without reservation

Highlights the absence of any hesitations or conditions.

be fully persuaded of

Stresses the thoroughness of the convincing.

be firmly convinced about

Conveys a strong and unwavering belief or conviction.

FAQs

What does "be fully sure of" mean?

The phrase "be fully sure of" means to have complete confidence or certainty about something. It implies a lack of doubt and a strong conviction in the truth or accuracy of a statement or fact.

How can I use "be fully sure of" in a sentence?

You can use "be fully sure of" in a sentence to express your strong conviction about something. For example: "Before investing, "be fully sure of" the company's financial stability."

What are some alternatives to "be fully sure of"?

Some alternatives to "be fully sure of" include "be completely certain of", "be entirely confident in", or "have no doubt about", depending on the context and the level of formality required.

Is it more appropriate to say "be fully sure of" or "be completely sure of"?

Both "be fully sure of" and "be completely sure of" are grammatically correct and convey a similar meaning. The choice between them often depends on personal preference or the specific nuance you want to express. "Completely sure" emphasizes the completeness of the certainty, while "fully sure" emphasizes the depth or extent of the certainty.