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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
realise that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "realise that" is correct and usable in written English.
It can be used when you want to express the moment of understanding or becoming aware of something. Example: "After much contemplation, I finally realise that I need to change my approach to the project."
✓ Grammatically correct
News & Media
Wiki
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Why did nobody realise that looks stupid?
News & Media
Realise that expression is attractive.
Wiki
I didn't realise that.
News & Media
I'm sure people realise that.
News & Media
But companies may not realise that.
News & Media
"Football is starting to realise that.
News & Media
Once you realise that, everything is possible".
News & Media
People would perhaps not realise that".
News & Media
People don't realise that.
News & Media
So you realise that.
News & Media
People don't always realise that.
News & Media
Expert writing Tips
Best practice
Consider using synonyms like "understand that" or "recognize that" to vary your language and avoid repetition.
Common error
Avoid embedding "realise that" too deeply within complex sentences, as this can make the sentence difficult to parse. Instead, break down the sentence or rephrase for clarity.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "realise that" functions as a cognitive verb phrase introducing a clause expressing understanding, awareness, or acknowledgment. As confirmed by Ludwig AI, this construction is commonly used to convey a speaker's or writer's comprehension of a fact or situation.
Frequent in
News & Media
45%
Wiki
20%
Science
15%
Less common in
Formal & Business
10%
Academia
5%
Social Media
5%
Ludwig's WRAP-UP
In summary, "realise that" is a versatile and frequently used phrase that signals understanding or awareness. As Ludwig AI confirms, it is grammatically correct and appears across a wide range of contexts, primarily in news media, wikis, and scientific publications. While "realise" is the British English spelling, "realize" is the American English equivalent. For alternative expressions, consider using "understand that", "recognize that", or "become aware that" to add variety to your writing. When using "realise that", ensure that the sentence structure remains clear and that the phrase logically introduces the statement of understanding.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
understand that
This alternative is a direct synonym, emphasizing comprehension of a fact or situation.
recognize that
This alternative focuses on acknowledging or identifying something as true.
become aware that
This alternative emphasizes the process of gaining knowledge or understanding.
it dawns on me that
This alternative suggests a sudden realization or understanding.
come to the conclusion that
This alternative implies a reasoned process leading to a realization.
it is clear that
This alternative indicates a self-evident realization.
see that
This alternative is a simpler, more direct way of expressing understanding.
I now know that
This alternative highlights a change in knowledge or understanding.
be conscious that
This alternative emphasizes being mindful or aware of something.
grasp that
This alternative conveys a firm understanding or comprehension.
FAQs
How can I use "realise that" in a sentence?
You can use "realise that" to introduce a statement of understanding or acknowledgement. For example, "I "realise that" this is a difficult decision."
What can I say instead of "realise that"?
You can use alternatives like "understand that", "recognize that", or "become aware that" depending on the context.
Which is correct, "realise that" or "realize that"?
"Realise that" is the British English spelling, while "realize that" is the American English spelling. Both are correct, but the choice depends on your audience and the style guide you are following.
What's the difference between "realise that" and "think that"?
"Realise that" implies a moment of understanding or awareness, whereas "think that" suggests an opinion or belief. "I "realise that" I need to study more" indicates an understanding of a necessity, while "I think that I need to study more" suggests an opinion or possibility.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested