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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
vary on condition
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "vary on condition" is not correct in standard written English.
A more appropriate phrase would be "vary depending on the condition." Example: "The results of the experiment may vary depending on the condition of the samples used."
⚠ May contain grammatical issues
Science
News & Media
Wiki
Alternative expressions(1)
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
1 human-written examples
On the other hand, antioxidant enzymes that vary on condition of oxidative stress in AD remain unsettled, since antioxidant enzymes like glutathione peroxidase (GPx) and superoxide dismutase (SOD) may be induced by oxidative stress (to increase their level or activity) or consumed (to decrease their level or activity) [ 37].
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Prices vary depending on condition, size and water access.
News & Media
Admittedly the degree of harm as well as the therapeutic options vary based on condition.
Science
The precise timing of such reductions, which would leave about 130,000 troops in Iraq, could vary, depending on conditions in the country.
News & Media
But such length-based limits are often flawed, because growth rates vary depending on conditions in the ocean.
Science & Research
The role of the centrosome is very complex as suggested by studies showing that the position of the centrosome can vary depending on conditions of migration within the same cell type [12], and between cell types [13].
Science
These rate constants vary depending on conditions such as the buffer-salt and pH of the solution.
Science
The ambient level of outdoor 2-NAPH is known to vary depending on conditions, including sampling location and meteorologic conditions, so it may not accurately represent outdoor PAH levels (Preuss et al. 2003).
Second, the effects of health literacy on readmissions may vary for conditions other than AMI.
Science
Though it is possible for someone who is not a registered broker-dealer to sell securities in a limited number of instances, it varies depending on conditions such as whether the offering is public or private.
News & Media
Micro strain arises due to the lattice misfit which varies on the deposition conditions and thus it is calculated by the formula.
Science
Expert writing Tips
Best practice
When describing how something changes based on a situation, use the phrase "vary depending on the condition" or "change based on the condition" for clarity and grammatical correctness. Always ensure the sentence clearly indicates what is varying and what condition it depends on.
Common error
Avoid using "vary on condition". It is more grammatically sound to use "vary depending on the condition" or "vary based on the condition". This ensures correct prepositional usage and improves clarity.
Source & Trust
78%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "vary on condition" functions as a prepositional phrase, attempting to express that something changes based on a specific condition. However, Ludwig indicates this phrasing is not standard English, and more appropriate alternatives should be used.
Frequent in
Science
34%
News & Media
30%
Wiki
20%
Less common in
Formal & Business
7%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "vary on condition" is generally considered grammatically incorrect in standard English. As Ludwig highlights, it's more appropriate to use phrases like "vary depending on the condition" or "change based on the condition". While the intended meaning—to express how something changes depending on a particular circumstance—is understandable, correct phrasing is crucial for clear and effective communication. Using the recommended alternatives will enhance clarity and ensure that the message is well-received in both formal and informal contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
vary depending on the condition
This alternative uses 'depending on' to explicitly state the causal relationship between the condition and the variation.
change based on the condition
Replaces "vary" with "change" and "on" with "based on" for a more direct and common phrasing.
fluctuate according to the condition
Uses "fluctuate" to imply a more dynamic variation and "according to" to show dependence.
differ with the condition
Replaces "vary" with "differ" and uses "with" to indicate the condition it changes in relation to.
be contingent on the condition
Uses "be contingent on" to emphasize that the variation is conditional.
be subject to change depending on the condition
Adds emphasis to the possibility of change based on the condition.
depend on the specific condition
Focuses on the dependence on a specific condition, implying a direct relationship.
hinge on the condition
Implies that the outcome or result is entirely dependent on the condition.
be determined by the condition
Suggests the condition dictates the specific outcome or variation.
oscillate in response to the condition
Emphasizes a back-and-forth movement or change influenced by the condition.
FAQs
How can I correctly use the phrase "vary on condition"?
The phrase "vary on condition" is not considered standard English. It is better to say "vary depending on the condition" or "vary based on the condition".
What is a better alternative to "vary on condition"?
More appropriate alternatives include "depend on condition", "change based on condition", or "fluctuate according to condition".
Is it grammatically correct to say "vary on condition"?
No, it is not grammatically correct. The standard English phrasing is "vary depending on the condition" or "vary based on the condition".
How does "vary on condition" differ from "vary depending on the condition"?
"Vary on condition" is grammatically incorrect and less clear. "Vary depending on the condition" clearly indicates that the variation is contingent upon a specific condition.
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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
78%
Authority and reliability
2.8/5
Expert rating
Real-world application tested