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
upon realization
Grammar usage guide and real-world examplesUSAGE SUMMARY
"upon realization" is correct and usable in written English.
You can use it when you are expressing the understanding of a new concept or idea, or to explain when someone or something has come to a new understanding. For example: "Upon realization that her sister was telling the truth, she apologized for not believing her."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
on realizing
after understanding
once aware
with the awareness
in light of the fact
having understood
upon completion
upon implementation
upon accomplishment
upon performance
upon achievements
upon accomplishments
upon understanding
upon achievement
upon execution
once realized
after realizing
once characterized
once finalized
when incurred
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
8 human-written examples
Experience moment of paralyzing fear upon realization I have crashed into the tension wall bisecting the living room, which was erected to squeeze another bedroom (mine) out of already cramped apartment.
News & Media
The knowledge that capital gains are subject to very heavy taxes upon realization can deter individuals subject to high-bracket rates from making investment decisions that are socially desirable.
Encyclopedias
Upon realization of complexation on the liquid liquid boundary the complex formation reaction has some time, caused obviously by diffusion of interacting macromolecules to the interface layer where the interaction takes place.
Science
Then the self-torture expands upon realization that said pudendum is probably getting passionately porked ragged by someone so awesome that they're not in prison.
News & Media
Upon realization that I'd seen more doctors, had more lab tests, and was taking more new medications in the past few months that in the entire prior years of my life combined!
News & Media
Add to this the anatomical differences between males -- designed for "spreading seed" -- and females -- designed for a pregnancy which, upon realization, does not benefit from additional intercourse -- and you have a recipe for one frustrating game of biological tug-of-war.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
Trump, too, has stumbled upon a realization that his enemies have yet to make: it is important for him to be a joke as well as a monster.
News & Media
Friends of Israel, including the United States, must recognize that Israel's security as a Jewish and democratic state depends upon the realization of a Palestinian state.
News & Media
Meanwhile, Fatima worries that if parents do the regulating, no learning will take place: "… it's my job and responsibility to come upon this realization and act on it.
News & Media
I went to NCFM.org (a website that uses a lot of exclamation points) and discovered that the organization, was "founded in 1977 upon the realization that men needed a unified voice in addressing issues concerning men and boys".
News & Media
What at first seems an odd note of fairy-tale villainy makes sense upon the realization that, unlike its predecessors, "Son" is not the story of a character confronting a damaged human society.
News & Media
Expert writing Tips
Best practice
Combine "upon realization" with a clear and specific statement of what was realized to maximize clarity and impact for the reader.
Common error
Avoid using "upon realization" in casual or informal writing. Simpler alternatives like "when I realized" or "after understanding" are more appropriate.
Source & Trust
84%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon realization" functions as a prepositional phrase that modifies a verb or clause, indicating the timing or condition under which an action occurs. It often introduces a cause-and-effect relationship, as supported by Ludwig.
Frequent in
News & Media
37%
Science
37%
Wiki
8%
Less common in
Encyclopedias
8%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "upon realization" is a prepositional phrase used to indicate the moment of understanding that triggers a subsequent action. As Ludwig AI points out, it's grammatically correct and functions to emphasize a cause-and-effect relationship. While generally suitable for formal and scientific writing, it may be less appropriate in casual contexts. Alternatives such as "on realizing" or "after understanding" can provide similar meanings with varying degrees of formality. The phrase is most commonly found in news and media and scientific publications.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
on realizing
More concise and less formal alternative, using a gerund instead of a noun.
after understanding
Emphasizes the process of understanding, rather than the moment of realization.
once aware
Highlights the state of being informed or conscious of something.
with the awareness
Similar in meaning, but adds a slight emphasis on the state of being aware.
in light of the fact
More formal and emphasizes the information that led to the realization.
having understood
Focuses on the completion of understanding.
becoming conscious of
Highlights the process of becoming aware.
in the understanding that
Emphasizes the premise or condition that leads to an action or decision.
when it became clear
Focuses on the point at which something becomes obvious.
following the insight
Highlights the sudden understanding or intuitive grasp of something.
FAQs
How can I use "upon realization" in a sentence?
Use "upon realization" to introduce a statement about something someone has understood. For instance, "Upon realization that the project was failing, they took immediate action".
What's a less formal way to say "upon realization"?
Less formal options include phrases like "when I realized", "after understanding", or simply "realizing that".
Is "upon realization" interchangeable with "after realization"?
While similar, "upon realization" emphasizes the immediacy of the understanding and the action that follows. "After realization" is more general and doesn't necessarily imply immediate action.
What can I say instead of "upon realization"?
You can use alternatives like "on realizing", "after understanding", or "once aware" depending on the context.
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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
4.4/5
Expert rating
Real-world application tested