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
is subject to variability
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is subject to variability" is correct and usable in written English.
It can be used to indicate that something may change or fluctuate over time or under different conditions. Example: "The results of the experiment are subject to variability due to environmental factors."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(13)
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
Individual response to oral antiplatelet therapy is subject to variability, and bedside monitoring offers the opportunity of individualizing therapy for stent implantation.
Science
Cardiovascular disease is quite a complex situation and the probability of experiencing or avoiding an event is subject to variability.
As a passive reporting system, NORS is subject to variability in reporting practices between states and among outbreaks associated with different transmission modes and exposure settings.
Science
PHC records will also be accessed to complete the secondary prevention and follow-up components of the audit and is subject to variability.
Science
This strict and objective outcome definition allows for increased confidence when comparing patients across centres; using intensive care unit admission alone as an outcome definition is subject to variability of thresholds for admission to intensive care between study sites.
Science
In South Africa the Loligo vulgaris reynaudii stock is subject to variability apparently driven by storm events during the spawning season which reduce underwater visibility on the spawning grounds and have negative effect on breeding success (Roberts and Sauer 1994, Roberts 1998).
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
Another aspect is that the stent insertion and deployment process is subject to variabilities (uncertainties) such as slight movement of the stent on balloon catheter, and changes in stent material properties during manufacturing.
Science
However, the many steps involved can be technically complex, and the resulting data are subject to variability from both technical and biological sources.
Science
So many aspects of our life are subject to variability and volatility.
News & Media
Thus, safety constraints in this complex environment are subject to variability and are highly dependent on the dynamics of the larger system and the specificities of the crossing context.
Science
Area samples are subject to variability due to temporal and spatial gradients around a cookstove.
Expert writing Tips
Best practice
When using "is subject to variability", clearly identify the factors causing the variability to provide context and enhance understanding for your reader. For example, specify whether the variability is due to environmental conditions, human error, or other influences.
Common error
Avoid using "is subject to variability" without explaining what causes the variability. Vague statements can confuse readers. Instead, clarify the factors that contribute to the observed variations.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is subject to variability" functions as a predicative expression, indicating that the subject it modifies is prone to fluctuation or change. This highlights a lack of consistency or predictability in the subject's behavior or characteristics, as confirmed by Ludwig.
Frequent in
Science
62%
News & Media
23%
Encyclopedias
15%
Less common in
Formal & Business
0%
Academia
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "is subject to variability" correctly indicates that something is likely to change or fluctuate. As Ludwig AI confirms, it serves to express uncertainty or a lack of fixedness, often appearing in scientific, news, and encyclopedic contexts. While grammatically sound, clarity is paramount; specify the sources of variability to avoid vagueness. Alternatives include "is prone to variation" and "is liable to fluctuate", offering nuanced ways to express similar ideas. The frequency of use for this phrase is uncommon.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is prone to variation
Emphasizes the tendency of something to vary.
is liable to fluctuate
Highlights the possibility of irregular shifts or changes.
is susceptible to change
Focuses on the vulnerability of something to alterations.
is open to modification
Indicates that something can be altered or adjusted.
is sensitive to fluctuations
Points out the responsiveness of something to changes.
is characterized by instability
Highlights the unstable nature of something.
is prone to inconsistency
Emphasizes the likelihood of lacking uniformity or predictability.
is contingent on circumstances
Highlights dependence of something from the circumstances.
depends on many variables
Changes the structure by highlighting the variables.
varies according to factors
Rephrases to focus on influential factors.
FAQs
What does "is subject to variability" mean?
The phrase "is subject to variability" means that something is likely to change or fluctuate; its characteristics are not constant and may differ under various conditions or at different times.
How can I use "is subject to variability" in a sentence?
You can use it to describe anything whose characteristics are not fixed. For example: "The experiment's results "are subject to variability" due to external factors."
What can I say instead of "is subject to variability"?
You can use alternatives like "is prone to variation", "is liable to fluctuate", or "is susceptible to change" depending on the context.
Is it better to say "is subject to variability" or "may vary"?
Both phrases are correct, but "is subject to variability" is more formal and emphasizes the potential for unpredictable changes, while "may vary" is simpler and suggests a range of possibilities.
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