Used and loved by millions
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
not realize
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "not realize" is correct and usable in written English.
It can be used when expressing a lack of awareness or understanding about something. Example: "I did not realize how much effort it would take to complete the project on time."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
56 human-written examples
"Does she not realize?" one asks.
News & Media
The students may not realize it.
News & Media
She did not realize just how hard.
News & Media
"He probably did not realize," he said.
News & Media
Some did not realize what was happening.
News & Media
He did not realize it, of course.
News & Media
Individual bondholders would not realize any losses unless they sold.
News & Media
They did not realize their honor needed defending.
News & Media
"I did not realize how it would be," he said.
News & Media
He does not realize the significance of this maneuver.
News & Media
Lange said: "I did not realize that's my wife.
News & Media
Expert writing Tips
Best practice
When using "not realize", ensure the context clearly indicates what the subject is unaware of. Providing specific details enhances clarity and prevents misinterpretation.
Common error
Avoid using "not realize" in the present tense when referring to a past event. Use the past tense form "did not realize" or "had not realized" for past situations to maintain grammatical accuracy.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not realize" functions as a verb phrase, typically used to express a lack of awareness or understanding. Ludwig AI confirms this is a grammatically correct and usable expression. It often introduces a clause explaining what was not understood or perceived.
Frequent in
News & Media
50%
Science
30%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "not realize" is a common and grammatically sound way to express a lack of awareness or understanding. As Ludwig AI confirms, its usage spans various contexts, including news, science, and formal business settings. When using "not realize", consider alternatives such as "be unaware of" or "fail to grasp" to add nuance to your writing. Ensure correct tense usage, particularly when referring to past events, to avoid grammatical errors.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
be unaware of
Indicates a state of lacking knowledge about something.
fail to grasp
Suggests an inability to understand or comprehend something.
not be conscious of
Highlights a lack of awareness or perception.
not apprehend
Implies a formal or intellectual failure to understand.
miss the significance of
Focuses on failing to understand the importance of something.
overlook
Indicates a failure to notice or consider something.
be oblivious to
Emphasizes a complete lack of awareness.
not appreciate
Highlights a failure to understand or value something.
be ignorant of
Implies a lack of knowledge or information.
not fathom
Suggests an inability to understand something complex or profound.
FAQs
What can I say instead of "not realize"?
You can use alternatives like "be unaware of", "fail to grasp", or "overlook" depending on the context.
How to use "not realize" in a sentence?
You can use "not realize" to indicate a lack of awareness or understanding. For example: "I did not realize how difficult the task would be" or "They may not realize the consequences of their actions".
What's the difference between "not realize" and "do not understand"?
"Not realize" implies a lack of awareness, whereas "do not understand" suggests a failure to comprehend. You might "not realize" something without trying to understand it, but if you "do not understand", you've likely attempted to comprehend it.
Is it better to say "not realize" or "fail to recognize"?
Both are acceptable, but "not realize" is more general. "Fail to recognize" implies a specific failure to identify or acknowledge something. The choice depends on the nuance you wish to convey.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested