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
to be solid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "to be solid" is correct and usable in written English.
It can be used to describe something that is reliable, strong, or well-founded, often in a metaphorical sense. Example: "Her argument was well-researched and to be solid, making it difficult to refute."
✓ Grammatically correct
News & Media
Science
Sports
Books
Business
Alternative expressions(20)
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
"He wants to be solid.
News & Media
We're going to be solid.
News & Media
"This used to be solid eelgrass.
News & Media
"Our turnovers have to be solid".
News & Media
There appears to be solid ground for optimism.
News & Media
Dr. Moses' work turned out to be solid.
News & Media
I used to be solid all the way through.
News & Media
And small-cap funds continued to be solid performers.
News & Media
When you play against Phoenix, you have to be solid".
News & Media
You have to be solid in an organization.
News & Media
We have to be solid and take our chances".
News & Media
Expert writing Tips
Best practice
When using "to be solid" in writing, ensure that the context clearly defines what aspect of solidity you are referring to—reliability, strength, or physical firmness—to avoid ambiguity.
Common error
Avoid using "to be solid" in overly abstract or vague contexts where its meaning becomes diluted. Instead, opt for more precise language that clearly conveys the intended quality or characteristic.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The infinitive phrase "to be solid" primarily functions as a predicate adjective complement, describing a state of being or a characteristic. It modifies a noun or pronoun, indicating a quality of reliability, strength, or firmness. As confirmed by Ludwig, the phrase is grammatically correct and widely used.
Frequent in
News & Media
58%
Science
10%
Sports
10%
Less common in
Books
5%
Formal & Business
5%
Reference
0%
Ludwig's WRAP-UP
In summary, the infinitive phrase "to be solid" is a versatile and grammatically sound expression used to convey reliability, strength, or stability. According to Ludwig, it is correct and usable in written English. Predominantly featured in news and media, its neutral register makes it suitable for various contexts. When using "to be solid", ensure clarity and avoid overuse in overly abstract situations to maximize its impact. Alternatives like "to be reliable" or "to be dependable" can provide nuanced meanings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
to be reliable
Focuses on dependability and trustworthiness rather than physical firmness.
to be dependable
Highlights the characteristic of being trustworthy and can be relied upon.
to be stable
Emphasizes steadiness and resistance to change or disruption.
to be robust
Suggests strength and resilience, capable of withstanding challenges.
to be secure
Implies safety and protection against threats or vulnerabilities.
to be firm
Focuses on resoluteness and steadfastness, both physically and metaphorically.
to be well-founded
Highlights that something is based on solid evidence or reasoning.
to be unshakeable
Emphasizes the inability to be moved or undermined.
to be unwavering
Suggests a steadfast commitment and resistance to fluctuation.
to be consistent
Highlights the aspect of maintaining a regular pattern or standard.
FAQs
How can I use "to be solid" in a sentence?
You can use "to be solid" to describe something reliable, strong, or well-founded. For example: "Their plan needs "to be solid" before implementation."
What are some alternatives to "to be solid"?
Depending on the context, you can use alternatives such as "to be reliable", "to be dependable", or "to be stable".
Is it better to say "to be solid" or "to be sturdy"?
"To be solid" and "to be sturdy" are similar, but "to be sturdy" often implies physical robustness, while "to be solid" can also refer to reliability or soundness. Choose the phrase that best fits the intended meaning. The phrases are not interchangeable in every context.
When is it appropriate to use "to be solid" metaphorically?
It is appropriate to use "to be solid" metaphorically when describing abstract concepts like plans, arguments, or relationships, where you want to convey a sense of reliability, strength, or stability. For example, "Their relationship needs "to be solid" to withstand challenges."
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested