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
must be spelled out
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must be spelled out" is correct and usable in written English.
It can be used when indicating that something needs to be clearly articulated or explained in detail. Example: "In formal writing, abbreviations must be spelled out on first use to ensure clarity for the reader."
✓ Grammatically correct
News & Media
Academia
Science
Formal & Business
Wiki
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
13 human-written examples
The partial reversal of former president Barack Obama's opening to Cuba still must be spelled out by Treasury and Commerce department regulations not yet written.
News & Media
For the dance world, divided on the ramifications of the ruling, it reinforced the understanding driven home by the long Graham fight that ownership must be spelled out contractually.
News & Media
"The negative consequences of unity, including what could be considerable social cutbacks for citizens in East and West Germany, must be spelled out clearly," said Neues Deutschland, the Communist Party daily in East Berlin.
News & Media
This must be spelled out in the contract.
News & Media
The interdependence or interactions among key factors must be spelled out, and well understood.
News & Media
These codes of ethics must be spelled out and must be made enforceable.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
"The truth must be spelt out," he said, "Saddam has nothing to do with the resistance.
News & Media
The relationships between saving money, expanding primary care and reforming acute care must be spelt out.
News & Media
The core benefits must be spelt out - and no more than three key points should be emphasized again and again.
News & Media
Why must every motivation be spelled out?
News & Media
What showing the purchasers must make cannot be spelled out with specificity in view of the sparsity of the present record.
Academia
Expert writing Tips
Best practice
In technical documentation, use "must be spelled out" to highlight critical steps or configurations that require precise execution.
Common error
Avoid using "must be spelled out" in casual conversations or informal writing; it can sound overly formal or condescending. Opt for simpler alternatives like "needs to be explained" or "should be clarified" in such situations.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be spelled out" functions as a directive, indicating that something requires explicit and detailed explanation. It is often used to emphasize the importance of clarity, especially in situations where ambiguity could lead to misunderstanding or problems. Ludwig AI confirms its correct usage.
Frequent in
News & Media
43%
Academia
21%
Formal & Business
12%
Less common in
Science
14%
Wiki
10%
Reference
0%
Ludwig's WRAP-UP
The phrase "must be spelled out" is a grammatically correct and commonly used expression that emphasizes the need for clarity and detailed explanation. According to Ludwig, it's suitable for various contexts, but it's particularly prevalent in news, academic, and formal business settings. While highly effective for ensuring precision, it may come across as overly formal in casual conversation, where simpler alternatives are more appropriate. In professional writing, ensure that when you indicate something "must be spelled out", the details follow to avoid ambiguity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
needs to be clarified
Focuses on making something clearer, reducing ambiguity.
should be fully explained
Emphasizes a complete and thorough explanation.
must be clearly defined
Highlights the importance of precise definitions.
has to be explicitly stated
Stresses direct and unambiguous communication.
should be articulated precisely
Emphasizes the careful and detailed expression of an idea.
requires detailed specification
Focuses on the need for precise and thorough specifications.
demands clear articulation
Highlights the necessity of clear and expressive communication.
calls for explicit details
Emphasizes the need for specific and unambiguous information.
necessitates thorough explanation
Indicates a need for a comprehensive and detailed explanation.
warrants explicit clarification
Suggests that clarification is not only helpful but justified.
FAQs
What does "must be spelled out" mean?
The phrase "must be spelled out" means that something needs to be explained in a very clear and detailed manner, leaving no room for ambiguity or misinterpretation.
When should I use the phrase "must be spelled out"?
Use "must be spelled out" when precision and clarity are essential, such as in legal documents, technical specifications, or instructions where misunderstanding could lead to problems. Alternatives include "needs to be clarified" or "should be fully explained" depending on the context.
What are some alternatives to "must be spelled out"?
Alternatives to "must be spelled out" include "needs to be clarified", "should be fully explained", "has to be explicitly stated", or "should be articulated precisely". The best choice depends on the specific context and the level of formality required.
Is "must be spelled out" too formal for everyday conversation?
While grammatically correct, "must be spelled out" can sound overly formal in casual conversation. Simpler phrases like "needs to be explained" or "should be clarified" are generally more appropriate for informal settings.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested