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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
are not solid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are not solid" is correct and usable in written English.
It can be used to describe something that lacks firmness, stability, or reliability. Example: "The foundations of the building are not solid, which raises concerns about its safety."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(1)
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
21 human-written examples
Clik disks are not solid state and introduce moving parts into the players.
News & Media
"They were just phone calls," Pasillico added, "and phone calls are not solid evidence".
News & Media
Until now, there have been no verdicts, which mean the cases are not solid enough," the minister argued.
News & Media
If the Knicks are not solid against them, their opening-night debacle may not have been the aberration they would like to believe it was.
News & Media
This year, they listened to an hourlong presentation from the meteorologist Craig Edwards, a game-day adviser for the Minnesota Twins, who urged his audience to remember that "storms are not solid state".
News & Media
For my money, Clue of the Day goes to "Its arms are not solid," a mind-bender from the first visual of nonsolid limbs, right through to the realization that we've been misdirected and that Mr. Croce is talking about the SEA.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
39 human-written examples
That's not to imply that there aren't solid business reasons for paying workers more.
News & Media
"Despite the mythology of Egyptology, that it is all about traps and hidden doors – why would anyone think that what look like solid walls aren't solid walls?
News & Media
Clinton acknowledged, however, that there really aren't solid means to challenge the results. .
News & Media
But Republican senators were not solid either.
News & Media
The Earth is not solid; it's a fiery ball of magma.
News & Media
Expert writing Tips
Best practice
When using "are not solid", ensure the context clearly defines what aspect lacks solidity, whether it's physical structure, evidence, or an abstract concept.
Common error
Avoid using "are not solid" without specifying why something lacks solidity. For example, instead of saying "The plans are not solid", clarify with "The plans are not solid because funding is uncertain."
Source & Trust
83%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are not solid" functions primarily as a descriptive phrase, indicating a lack of firmness, stability, or reliability. Ludwig AI examples confirm its use in describing physical objects, evidence, or abstract concepts.
Frequent in
News & Media
54%
Science
25%
Wiki
21%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "are not solid" is a versatile and commonly used expression that indicates a lack of firmness, stability, or reliability. Ludwig AI confirms its grammatical correctness and widespread use across various contexts, including News & Media, Science, and Wiki. While it maintains a neutral register, it is crucial to specify what exactly lacks solidity to avoid overgeneralization. Alternatives such as "are unstable" or "lack solidity" can be used depending on the specific nuance you wish to convey. By understanding its function, purpose, and common errors, writers can effectively use "are not solid" to express doubt, uncertainty, or concern in their writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
lack solidity
This alternative replaces the verb "are" with "lack" and the adjective "solid" with the noun "solidity".
are not firm
This substitutes "solid" with "firm", emphasizing a lack of stability or resolve.
are unstable
This replaces "not solid" with "unstable", highlighting a lack of stability.
are not stable
This uses "stable" instead of "solid", focusing on the absence of steadiness or security.
are without substance
This alternative uses a more formal tone, indicating a lack of real content or importance.
do not hold up
This implies that something cannot withstand scrutiny or pressure.
are questionable
This alternative suggests that something is doubtful or uncertain.
are dubious
Similar to "are questionable", but with a slightly stronger connotation of doubt or suspicion.
are flimsy
This suggests that something is weak or poorly made.
are weak
This is a more general term for lacking strength or effectiveness.
FAQs
How can I use "are not solid" in a sentence?
The phrase "are not solid" can be used to describe something that lacks firmness, stability, or reliability. For example, "The foundations of the building "are not solid", raising concerns about its safety".
What are some alternatives to "are not solid"?
You can use alternatives such as "are unstable", "lack solidity", or "are not firm" depending on the context.
Which is more appropriate, "are not solid" or "aren't solid"?
"Are not solid" and "aren't solid" are both grammatically correct; "aren't solid" is a contraction and is more informal. Use "are not solid" in formal writing and "aren't solid" in informal contexts.
What does it mean when something "is not solid"?
When something "is not solid", it means it lacks physical firmness, stability, or can also mean that something is unreliable or lacks a strong foundation, such as a plan or an argument. The expression's meaning is quite versatile.
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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
4.3/5
Expert rating
Real-world application tested