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
firm rationale
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "firm rationale" is correct and usable in written English.
It can be used when discussing a strong or well-founded reason for a decision or action. Example: "The committee provided a firm rationale for their choice, emphasizing the importance of sustainability in their decision-making process."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(20)
solid justification
strong justification
valid explanation
sound reasoning
cogent reason
compelling argument
convincing explanation
substantial basis
solid reasoning
firm reason
firm purpose
business rationale
firm bedrock
firm justification
firm explanation
firm basis
firm reasons
firm requirements
firm principles
strong rationale
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
26 These findings collectively provide a firm rationale for a trial to determine whether systematically identifying and treating sleep problems at school entry improves psychosocial and learning outcomes in children's first year of formal schooling.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
The attorney called me back after he saw my interview in Tax Notes, "Groups Urge IRS to Rethink 199A Business Income Rules". I presented our firm's rationale for including Section 475 ordinary income/loss in QBI for TTS traders and suggested he read and watch our content.
News & Media
Despite a firm financial rationale, companies, surprise-to-no-one, themselves stunningly lacking in diversity, continue to effortlessly and cheerfully invest in grooming unthinking sexists and racists.
News & Media
In many countries, off-label use is allowed when it is based on a firm scientific rationale and on sound medical evidence, preferably summarised in clinical practice guidelines [ 17- 19].
Science
80 The FDA says that when using a drug 'off-label', clinicians 'have the responsibility to be well informed about the product, to base its use on firm scientific rationale and on sounded medical evidence, and to maintain records of the product's use and effects'.
Science
But the advisory firm questioned the rationale for joining with T-Mobile, which has struggled against bigger rivals like AT&T, which failed to buy the company for $39 billion two years ago, and Sprint Nextel.
News & Media
Following this rationale, firms with a large amount of non-debt tax shields will have lower levels of debt than firms with a small amount of non-debt tax shields.
Science
As our study suggests that there is no immediate detrimental impact or disadvantage from CSR activities, firms have enough rationale to utilize their resources to improve their CSR and to enhance the expectations of their stakeholders.
8 The basic needs approach also holds firm ground in underlying rationale for policy design.
Science
Both collaborations were based on seemingly solid rationale: technology firms hold troves of our personal data but know little about health and don't have much credibility in that industry – with the public or with regulators.
News & Media
Our results are consistent with the agency cost mitigation of free cash flow and underinvestment providing a core rationale for firms' adoption of such a complex asset-based financing.
Expert writing Tips
Best practice
Use "firm rationale" when you want to convey that the reason or justification behind a decision is not only logical but also strongly supported by evidence or principles. Be sure the context aligns with the sense of certainty the phrase conveys.
Common error
Avoid using "firm rationale" when the evidence supporting the claim is weak or based on assumptions. Using the phrase in such situations can undermine your credibility.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "firm rationale" functions as a noun phrase, where "firm" modifies "rationale". It describes a well-founded and solid reason or justification. Ludwig AI indicates that it's a valid and usable phrase in English.
Frequent in
Science
30%
News & Media
30%
Formal & Business
20%
Less common in
Academia
10%
Encyclopedias
5%
Wiki
5%
Ludwig's WRAP-UP
The phrase "firm rationale" is a grammatically sound expression used to denote a strong and well-supported reason or justification. As Ludwig AI confirms, it's usable across various contexts, particularly in scientific, news, and business domains. While not extremely common, it effectively conveys certainty and validity. Alternatives like "solid justification" or "strong justification" can be used for semantic variation. It's best practice to employ this phrase when you want to highlight that the reasoning behind a decision is underpinned by solid evidence. Ensure not to use it when the evidence is weak to avoid undermining credibility.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
solid justification
Replaces "firm" with "solid", indicating a reliable and well-supported reason.
strong justification
Replaces "firm" with "strong", emphasizing the robustness of the reason.
valid explanation
Shifts from rationale to explanation, implying a clear and acceptable reason.
sound reasoning
Focuses on the quality of the thought process behind the reason.
cogent reason
Uses "cogent" to stress the clarity and logical soundness of the reason.
well-founded reason
Indicates that the reason is based on solid evidence or principles.
compelling argument
Highlights the persuasiveness of the reason.
convincing explanation
Emphasizes the ability of the explanation to persuade or convince.
defensible justification
Highlights that the justification can be defended or supported against criticism.
substantial basis
Focuses on the underlying foundation or support for the reason.
FAQs
How can I use "firm rationale" in a sentence?
You can use "firm rationale" to describe a well-supported and logical justification for a decision or action. For example: "The board provided a "firm rationale" for their investment strategy, citing market trends and financial projections."
What are some alternatives to "firm rationale"?
Some alternatives to "firm rationale" include "solid justification", "strong justification", or "valid explanation" depending on the specific context.
Is it better to use "firm rationale" or "strong reason"?
The choice between "firm rationale" and "strong reason" depends on the context. "Firm rationale" suggests a more developed and reasoned justification, while "strong reason" simply indicates a powerful motive. Consider which term best fits the level of detail and support you want to convey.
What does it mean when something lacks "rationale"?
If something lacks "rationale", it means there is no clear or logical basis for it. A lack of rationale suggests that the action or decision is arbitrary or without sufficient justification.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested