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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
undetermined between
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "undetermined between" is correct and usable in written English. You can use it when discussing a choice or situation that lacks a clear decision or outcome between two or more options. Example: "The results were undetermined between the two hypotheses." Alternative expressions include "uncertain between" and "indeterminate between."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(6)
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
2 human-written examples
There was strong support for Trochodendron as sister to core eudicots in IR analyses, whilst the core eudicot sister was undetermined between Trochodendron and Buxus in cp-gene analyses (BS 50%).
Science
For all these, the lowest DIC is undetermined between the Random Effects Model and the Mixed Regression Model, although for all of them the Random Effects Model seems to be the most reasonable alternative.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Some kind of as yet undetermined interaction between the development of progression and the suppression of relapses is strongly implied, possibly analogous to what occurs in primary progressive multiple sclerosis.
Science
There is also a case with mismatch between "undetermined" and "unknown" rhythm.
A total of 195 individual samples (♂: 106, ♀: 88, sex undetermined: 1), collected between the years 2000-2004, were available for this study.
Science
Their results led to the conclusion that fusion requires on average three HA trimers, each of which independently undergoes the same, rate-limiting rearrangement, but they left undetermined the relationship between this conclusion and the inferred intermediates in Figure 1A.
Science
It is an important property of Łukasiewicz' three-valued logic that the truth-value of the disjunction of two undetermined propositions is undetermined, i.e., (p ∨ q) is undetermined for p undetermined and q undetermined.
Science
Hamming approach degree is defined to the similar degree between the undetermined samples and standard samples, and the greater its value indicates that the undetermined samples are closer to the standard samples, that is to say, the undetermined samples and the standard samples are owned to the same class.
After that, calculating the hamming approach degree between the undetermined samples and 9 cluster centers, which is to determine the class of the samples.
(3) Calculating the distances between the undetermined samples and every cluster centers with Eq. (8), and assigning the sample to the class, whose cluster center is the nearest to this sample.
Also undetermined is whether relationships between music and reading work in reverse, with language-based literacy remediation leading to improved music aptitude.
Expert writing Tips
Best practice
Place this phrase in contexts where the alternatives are clearly defined nouns or models to maintain clarity in technical writing.
Common error
Avoid using "undetermined between" to describe your personal feelings or choices, such as what to eat for dinner. In those cases, "undecided between" is the more natural and appropriate selection.
Source & Trust
90%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "undetermined between" acts as an adjective phrase followed by a prepositional complement. In the examples provided by Ludwig, it primarily functions as a predicative adjective to describe a subject that lacks a definitive classification or result. It is often used to link a noun (like 'fate', 'status' or 'relationship') to a set of potential outcomes that remain unverified.
Frequent in
Science
65%
News & Media
25%
Encyclopedias
10%
Less common in
Social Media
5%
Wiki
3%
Business
2%
Ludwig's WRAP-UP
According to Ludwig AI, the phrase "undetermined between" is a robust and grammatically correct way to describe a state of parity or unresolved distinction. It is most effectively utilized in Scientific and Professional writing to denote that research findings or investigations have not yet yielded a singular conclusion among several options. While it shares semantic space with alternatives like uncertain between, its technical tone makes it particularly suitable for discussing models, species relationships and legal statuses. Writers should favor this phrase in formal contexts to maintain an objective and authoritative voice.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
indeterminate between
More formal and often used in mathematics or legal contexts to suggest a lack of definitive classification.
uncertain between
A more general term that can refer to subjective doubt or objective lack of evidence.
undecided between
Usually implies a human agent making a choice rather than an objective state of data.
unclear between
Simpler and more common in conversational or less technical news reporting.
unresolved between
Suggests a conflict or situation that has not yet reached a final conclusion.
ambiguous between
Suggests that the evidence supports two or more interpretations equally.
not yet determined between
Emphasizes the temporal aspect, suggesting a decision is forthcoming.
vacillating between
Implies an active movement or fluctuation between options rather than a static state.
unsettled between
Often used for disputes or environments where a final state has not been reached.
torn between
Idiomatic and emotional, primarily used for personal dilemmas.
FAQs
How do I use "undetermined between" in a sentence?
You can use it to describe a lack of a clear winner or result in a study, such as "The phylogenetic position was "undetermined between" two competing species groups."
What can I say instead of "undetermined between"?
Depending on your context, you can use phrases like "uncertain between", "indeterminate between", or "unresolved between".
Which is more formal, "undetermined between" or "undecided between"?
"undetermined between" is generally considered more formal and is the preferred choice in scientific research and technical reports recorded by Ludwig.
Can I use "undetermined between" for three options?
Yes, although "between" often implies two, it is acceptable in formal English to use "undetermined between" when listing multiple distinct entities where a clear distinction hasn't been made.
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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
90%
Authority and reliability
4.8/5
Expert rating
Real-world application tested