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
exist upon
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "exist upon" is correct and usable in written English.
It can be used to indicate that something is based on or relies on a particular condition or situation. Example: "The success of the project will exist upon the collaboration of all team members."
✓ Grammatically correct
Science
News & Media
Wiki
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
18 human-written examples
Ava Lavender's story shows you the fragile threads we all exist upon and what we do to stay upright.
News & Media
The existence of these buddhas erases the separation between samsara and nirvana inherent in the idea that buddhas cease to exist upon attaining nirvana.
Encyclopedias
But William holds that these souls cease to exist upon the death of the plant or animal.
Science
With measured data from an outdoor urban environment, they show that stable subspaces exist upon which transmission is possible without any instantaneous channel state information at the transmitter.
The smaller straight lines reflect the theoretical instantaneous arterial input pressure to blood flow relations that exist upon this autoregulation curve showing how changes in vascular tone from maximal vasoconstriction (far left) to maximal vasodilation (far right) account for this phenomenon.
Science
I exist upon that line, at the high end of the female spectrum.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
42 human-written examples
The analyses show that no stable supercooled liquid region exists upon heating.
Science
"I do not believe that a basis exists upon which either of the franchises should be renewed," when they expire in August after 20 years.
News & Media
Castor declined to charge Cosby with any crime, saying in a statement: "The district attorney finds insufficient, credible, and admissible evidence exists upon which any charge against Mr Cosby could be sustained beyond a reasonable doubt".
News & Media
Indeed, we are interested on whether a feasible region exists upon the constraint imposed by the gene knockout (7), i.e. whether the fact that the encoded reactions cannot carry flux implies no flux in the biomass equation.
Science & Research
Earlier experiments using X-ray diffraction have indicated that a new phase of alumina exists upon non-hydrostatic compression of 67 nm particles of γ-alumina to above 35 GPa and quasi-hydrostatic compression to pressures over 50 GPa.
Science
Expert writing Tips
Best practice
Use "exist upon" to emphasize that something's presence or validity is fundamentally linked to a specific condition or foundation. It adds a slightly more formal tone to your writing.
Common error
Avoid using "exist upon" in very casual or informal writing where simpler alternatives like "depend on" or "rely on" would be more appropriate. Overuse can make your writing sound stilted or unnatural in everyday conversation.
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "exist upon" functions as a prepositional phrase indicating reliance or dependence. It suggests that the existence or validity of something is fundamentally linked to a particular condition, circumstance, or foundation. Ludwig's examples show its usage in diverse contexts, from abstract concepts to concrete situations.
Frequent in
Science
50%
News & Media
40%
Wiki
10%
Less common in
Encyclopedias
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "exist upon" is a grammatically correct prepositional phrase used to indicate dependence or reliance. While less common than simpler alternatives like "depend on" or "rely on", it adds a degree of formality to writing and is appropriate for diverse contexts. As confirmed by Ludwig, the phrase follows standard grammatical rules. It's particularly prevalent in scientific and news media sources, making it a useful addition to a formal vocabulary.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
depend on
Focuses on reliance or contingency; suggests that something's occurrence or validity is conditional on something else.
rely on
Emphasizes dependence for support or function, often implying a necessary condition.
be dependent on
Directly states the state of being reliant or determined by another factor.
be predicated on
Highlights that something is based on a specific assumption, condition, or foundation.
be contingent on
Underscores the conditional nature of existence or outcome based on another factor.
be conditional on
Highlights the condition that must be met for something to exist or occur.
rest on
Suggests that something's stability or validity is supported by a particular base or foundation.
be founded on
Emphasizes the establishment or creation of something with a specific base or reason.
hinge on
Implies that the outcome or result is significantly determined by one key factor.
turn on
Suggests that the result or state changes based on a pivotal element.
FAQs
How can I use "exist upon" in a sentence?
You can use "exist upon" to indicate that something is based on or relies on a particular condition or situation. For example: "The success of the project will "depend on" the collaboration of all team members" can be rephrased as "The success of the project will exist upon the collaboration of all team members."
What is a simpler alternative to "exist upon"?
Simpler alternatives to "exist upon" include "depend on", "rely on", or "be based on". The choice depends on the specific context and the nuance you want to convey.
Is "exist upon" formal or informal?
"Exist upon" tends to be more formal than alternatives like "depend on" or "rely on". It is suitable for academic, scientific, or formal writing, but may sound unnatural in casual conversation.
What's the difference between "exist upon" and "be contingent on"?
While both phrases indicate dependence, "exist upon" emphasizes the fundamental reliance of something's existence on a condition. "Be contingent on" highlights that something's occurrence or outcome is conditional on something else. For example, "The agreement is "contingent on" legal review."
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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
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested