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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
for a valid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "for a valid" is correct and usable in written English.
It can be used when discussing conditions, requirements, or criteria that need to be met for something to be considered acceptable or legitimate. Example: "You must provide documentation for a valid reason to request a refund."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(4)
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
Every fence and wall, he told the Guardian, was built for a valid reason.
News & Media
The javelin is not required to stick but must land point-first for a valid throw.
Encyclopedias
However, too few multiple-session studies exist for a valid meta-analysis.
News & Media
We have been given a formula for a "valid" relationship: it must combine sexual and platonic love.
News & Media
Evidence has been provided for a valid depressive syndrome among preschool children.
The experimental results show that not so large specimens are needed for a valid KIC test.
Science
The experimental requirements for a valid combinatorial test are analyzed using three-dimensional computational fracture mechanics.
Science
Both parts and assembly must be regenerated (or rebuilt) for a valid product model.
Then, the reactive routing protocol searches for a valid entry in its forwarding tables.
As said, the methodology for testing the sites includes one simple API call and check for a valid result.
News & Media
For a valid evaluation of the previous month (questions 1 and 2) you may need your supervisor's insights.
Science & Research
Expert writing Tips
Best practice
Use "for a valid" when you need to emphasize that a condition, reason, or result meets a specific set of requirements or standards. It's suitable for both formal and informal writing.
Common error
Avoid using "for a valid" excessively in casual conversations or informal writing, as it can sound overly formal. Consider simpler alternatives like "for a good reason" or "because" in such scenarios.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "for a valid" primarily functions as an adjective phrase modifying a noun. It indicates that the noun meets a certain standard of legitimacy, correctness, or acceptability. As Ludwig indicates, it is generally considered correct and usable.
Frequent in
Science
61%
News & Media
28%
Encyclopedias
2%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "for a valid" is a grammatically correct and widely used adjective phrase that indicates legitimacy, correctness, or acceptability. As Ludwig highlights, its communicative purpose is to provide justification and validation across diverse contexts, particularly in scientific, news, and encyclopedic domains. While versatile, it tends to lean towards a neutral to formal register, making it suitable for structured communications. It’s advisable to consider context and audience to avoid overuse in casual settings. A number of alternatives, such as "for a legitimate" or "for a sound", can provide similar meaning with slight nuances.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
for a legitimate
Replaces 'valid' with 'legitimate', emphasizing lawfulness or genuineness.
for a sound
Replaces 'valid' with 'sound', suggesting a strong and justifiable basis.
for a justifiable
Replaces 'valid' with 'justifiable', emphasizing the defensibility or reasonableness of something.
for an acceptable
Replaces 'valid' with 'acceptable', focusing on meeting a required standard or level.
for a proper
Replaces 'valid' with 'proper', highlighting adherence to established norms or procedures.
for a correct
Replaces 'valid' with 'correct', indicating accuracy or conformity to fact.
for a genuine
Replaces 'valid' with 'genuine', stressing authenticity and lack of deceit.
for an authentic
Replaces 'valid' with 'authentic', emphasizing that something is real and not a copy.
for a substantiated
Replaces 'valid' with 'substantiated', highlighting that something has been proven or supported with evidence.
for a well-founded
Replaces 'valid' with 'well-founded', suggesting a solid basis in facts or reasoning.
FAQs
How can I use "for a valid" in a sentence?
You can use "for a valid" to introduce a reason, condition, or result that meets specific requirements or standards. For example, "You must provide documentation "for a valid reason" to request a refund".
What are some alternatives to "for a valid"?
Depending on the context, you can use alternatives such as "for a legitimate reason", "for a sound explanation", or "for an acceptable excuse".
Is "for a valid reason" the same as "for a good reason"?
While similar, "for a valid reason" implies that the reason meets certain formal or predefined criteria, whereas "for a good reason" is more general and subjective. You might need documentation "for a valid reason" but only a heartfelt apology "for a good reason".
When should I use "for a valid" instead of "because"?
Use "for a valid" when you want to emphasize the legitimacy or justification of something. "Because" is a more general causal connector. For instance, you might choose "for a valid" when explaining why specific data was excluded from a scientific study.
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested