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
vary over
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "vary over" is correct and usable in written English.
You can use it when you want to mention that something changes differently in different places or contexts. For example, you could say, "The availability of resources can vary over different regions."
✓ Grammatically correct
Science
News & Media
Academia
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
There is also the possibility that alpha might vary over much shorter time scales.
News & Media
Witness accounts vary over who was the initial aggressor, but the confrontation soon came to blows.
News & Media
Opinions vary over why.
News & Media
It can vary over time.
Academia
But the gap does vary over time.
News & Media
Error detection rates vary over time.
Academia
Yes, rates of growth are going to vary over time.
News & Media
Our investment in relationships can vary over time, too.
News & Media
Synapse numbers in the brain vary over time.
Academia
The results show that degraded areas vary over the years.
Other leading Kurds vary over tactics and timing.
News & Media
Expert writing Tips
Best practice
When using "vary over", ensure the context clearly defines the range or scope across which the variation occurs. For instance, specify whether the variation is over time, geographical locations, or different experimental conditions.
Common error
Avoid using "vary over" when the variation is not clearly defined or understood. Ensure the range or scope across which the variation occurs is specified. If not, consider using a simpler phrase like "vary" or "differ".
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "vary over" functions as a verb phrase indicating how something changes or differs across a defined range or period. Ludwig AI shows examples where it signifies alterations in intensity, opinions, or characteristics.
Frequent in
Science
32%
News & Media
30%
Academia
18%
Less common in
Encyclopedias
8%
Formal & Business
6%
Wiki
6%
Ludwig's WRAP-UP
In summary, the phrase "vary over" is a versatile and grammatically sound way to express how something changes or differs across a specific range, such as time, space, or varying conditions. As Ludwig AI confirms, its usage is common across diverse contexts, especially in scientific, news, and academic writing. To ensure accuracy, it's essential to clearly define the scope across which the variation occurs, such as specifying if it is "over time" or "over regions". Some alternatives to consider, depending on the context, are "fluctuate across", "differ among", or "change through". By understanding these nuances, writers can effectively use "vary over" to convey dynamic relationships and alterations in their writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
fluctuate across
This alternative emphasizes irregular shifts or oscillations over a range.
change through
This emphasizes the transformation or modification happening as time passes or across different instances.
differ among
Highlights the distinctions or dissimilarities between multiple entities or points.
evolve throughout
Focuses on gradual development and transformation over a period.
shift across
This suggests a movement or alteration from one state or condition to another over a range.
range within
Indicates that values or characteristics fall within a specific scope or boundary.
oscillate between
Highlights the regular back-and-forth movement between two points or states.
alternate between
This suggests a consistent pattern of switching back and forth between two or more things over time.
diverge across
Emphasizes the act of splitting and moving in different directions over a particular space.
transform during
This indicates a fundamental change in form or appearance during a certain period.
FAQs
How can I use "vary over" in a sentence?
You can use "vary over" to indicate how something changes across a particular range or duration. For example, "The intensity of sunlight can "vary over the course" of the day".
What are some alternatives to "vary over"?
Depending on the context, you could use phrases like "fluctuate across", "differ among", or "change through" to express similar ideas.
Which is correct, "vary over time" or "vary in time"?
"Vary over time" is generally preferred when describing how something changes throughout a period. "Vary in time" is less common and may not always be grammatically correct depending on the intended meaning.
What's the difference between "vary over" and "vary across"?
"Vary over" often implies a change happening during or throughout something, like a time period or an area. "Vary across" is used when describing change from one entity to another such as locations, individuals, or categories.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested