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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
without a rationale
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "without a rationale" is correct and usable in written English.
You can use it when you need to explain that a decision or action was taken without a logical explanation. For example, "The teacher made the decision to expel the student without a rationale."
✓ 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
10 human-written examples
Severed from its history in the lands of exile, and without a rationale to supersede its original liberationist impulse, Fatah became mired in narrow and parochial turf wars.
News & Media
The "right" amount has been the result of bargaining, without a rationale that makes it clear why vacations are important, not just another entitlement.
News & Media
A democracy can't tax citizens without a rationale, however cockeyed, as much of the War on Poverty's rationale was.
News & Media
The first instance of feedback was framed explicitly without a rationale that explains the process or why revision is necessary, which belongs to the carrying category.
Science
Without a rationale in hand, nothing prevents a reductionist from simply offering us detailed definitions and challenging us to come up with counterexamples.
Science
The emotional consequences of this endeavor start small, but year after year, their weight builds until we cannot imagine a future without a rationale, a plan, or a model for living.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
The board later posted its decision online without providing a rationale.
News & Media
In the other four observations the EPDS was not introduced but rather handed to the woman for her to complete without providing a rationale.
Science
If there is a flaw, it is that many of the bioinformatics analyses seem to be performed without a strong rationale (or at least a stated rationale).
Science
Nor are any of the Administration's actions without the germ of a rationale.
News & Media
That doesn't mean Ms. Lebsock should have conjured up a rationale without evidence, but she could have used her extensive knowledge of the period, the criminal justice system and the culture to offer an explanation of such behavior.
News & Media
Expert writing Tips
Best practice
Use "without a rationale" to clearly indicate the absence of logical justification for an action or decision. This strengthens critiques and highlights potential flaws in processes or arguments.
Common error
Avoid using "without a rationale" when there is simply a lack of understanding of the rationale, rather than its actual absence. Ensure the rationale genuinely doesn't exist, not just that it's not apparent.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "without a rationale" functions as an adverbial modifier, typically used to describe how or why an action is performed or a decision is made. It indicates the absence of a logical or reasoned explanation for something. As Ludwig AI confirms, the phrase is grammatically correct and usable in written English.
Frequent in
Science
41%
News & Media
37%
Academia
13%
Less common in
Wiki
3%
Formal & Business
3%
Encyclopedias
1%
Ludwig's WRAP-UP
In summary, the phrase "without a rationale" serves as a critical tool to express the lack of a logical justification for an action or decision. As Ludwig AI confirms, this phrase is grammatically correct and frequently used to indicate a deficiency. It appears most often in scientific and news contexts. While not as common in casual speech, its clarity and precision make it effective in formal writing when highlighting the absence of sound reasoning. When using the expression, be mindful of related alternatives like "lacking justification" or "without a reason" and ensure a genuine absence of rationale rather than a simple misunderstanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
lacking justification
Emphasizes the absence of a valid reason or excuse.
unjustified
Directly states that something is not justified.
without a reason
Indicates the absence of any reason or cause.
lacking a basis
Highlights the absence of a fundamental support or foundation.
unfounded
Suggests that something has no solid foundation or support.
arbitrarily
Implies that something is done based on random choice or personal whim, without any system or reason.
without cause
Indicates that there is no valid reason or grounds for an action or decision.
for no good reason
Colloquial way of saying there's no sensible explanation.
without explanation
Focuses on the lack of an account or clarification.
irrationally
Suggests that something is done without logical thought or reason.
FAQs
How can I use "without a rationale" in a sentence?
You can use "without a rationale" to describe actions, decisions, or policies that lack a logical or justifiable basis. For example, "The company changed its policy "without a rationale", causing confusion among employees".
What are some alternatives to "without a rationale"?
Alternatives include "lacking justification", "unjustified", or "without a reason". The best choice depends on the specific context and the nuance you want to convey.
Is it better to say "without a rationale" or "without rationale"?
Both are grammatically acceptable, but "without a rationale" is more common and generally preferred because it specifies the absence of a single, defined justification, while "without rationale" can imply a more general lack of reason.
What is the difference between "without a rationale" and "irrationally"?
"Without a rationale" describes the state of an action or decision lacking a logical basis, while "irrationally" describes the manner in which something is done – acting illogically. For example, a decision made "without a rationale" might be implemented "irrationally".
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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
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested