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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
rock solid
Grammar usage guide and real-world examplesUSAGE SUMMARY
"rock solid" is a correct and usable phrase in written English.
It is often used figuratively to describe something that is strong, dependable, or unwavering. For example, you could say, "My grandfather has been a rock solid source of support throughout my life."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(12)
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
Rock solid.
News & Media
JODL: Rock solid.
News & Media
Our magazine is rock solid".
News & Media
The Beethoven was rock solid.
News & Media
@mike_pence is rock solid".
News & Media
He's rock solid".
News & Media
Our unionism is rock solid".
News & Media
He's a rock solid reporter".
News & Media
"But it seems rock solid.
News & Media
Bobs Worth does look rock solid.
News & Media
The pros' entrances were absolutely rock solid.
News & Media
Expert writing Tips
Best practice
Use "rock solid" to convey a sense of unwavering strength and dependability in your writing. It is particularly effective when describing plans, relationships, or support systems.
Common error
While "rock solid" is widely understood, avoid overusing it in overly casual or informal settings where more nuanced or specific vocabulary might be more effective. Choose language that best fits the tone and context of your writing.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "rock solid" primarily functions as a compound adjective, modifying nouns to describe their strength, reliability, or stability. Ludwig provides numerous examples demonstrating its adjectival usage in various contexts.
Frequent in
News & Media
64%
Formal & Business
14%
Science
11%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "rock solid" is a very common and grammatically correct compound adjective used to describe something as strong, reliable, and dependable. According to Ludwig, it is most frequently found in News & Media, Formal & Business and Science contexts. The phrase conveys assurance and confidence. To avoid overuse in informal contexts, you can use alternatives such as "reliable", "dependable", or "unshakeable" depending on the specific context. The phrase's versatility and broad applicability make it a valuable addition to your writing repertoire.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
reliable
Similar to dependable, this term underscores the consistency and trustworthiness of something.
unshakeable
This term indicates something that cannot be undermined or destabilized, stressing its resilience and firmness.
dependable
This highlights the reliability and trustworthiness of someone or something, focusing on their ability to be counted on.
stable
This indicates consistency and resistance to sudden changes or disruptions, highlighting steadiness.
unwavering
This term emphasizes the consistent and steadfast nature of something, focusing on its resistance to change or doubt.
steadfast
This emphasizes a firm and unwavering commitment or loyalty, focusing on reliability in the face of challenges.
impregnable
This suggests invulnerability and the inability to be overcome or penetrated, highlighting a sense of absolute security.
sturdy
This implies a strong and robust construction, focusing on physical resilience and durability.
resilient
This emphasizes the ability to recover quickly from difficulties, highlighting adaptability and toughness.
sound
This suggests something is well-founded and reliable, particularly in judgment or decision-making.
FAQs
How can I use "rock solid" in a sentence?
You can use "rock solid" to describe something dependable or strong. For example, "Their defense was "impenetrable"", or "He's a "dependable" friend".
What are some alternatives to "rock solid"?
Depending on the context, you can use alternatives like "reliable", "dependable", or "unshakeable" to convey a similar meaning.
Is it appropriate to use "rock solid" in formal writing?
Yes, "rock solid" is appropriate in formal writing when you want to emphasize the strength and reliability of something. However, ensure it fits the overall tone and register of your piece and replace it with synonyms such as "reliable" or "dependable" when appropriate.
What does it mean when something is described as "rock solid"?
When something is described as "rock solid", it means that it is strong, "dependable", and unlikely to fail. It conveys a sense of stability and reliability.
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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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested