"More rock solid" is an idiomatic expression used to describe something that is even more firm, stable, or unyielding than something else. The phrase combines the metaphorical attributes of a rock, known for its strength and durability, with the comparative adjective "more," indicating a higher degree or level of these characteristics.
When used in a figurative sense, "more rock solid" usually refers to the reliability, steadfastness, or robustness of an object, idea, or relationship. It implies that the subject being described is exceptionally dependable, unshakable, or trustworthy, surpassing the already high standard of being "rock solid."
For example, if someone praises a particular friendship as "more rock solid" than another, they are asserting that the friendship being referred to is even stronger, more enduring, and more dependable than the other. Similarly, if an individual mentions that a product's performance is "more rock solid" compared to a competitor's, they are indicating that the former is even more consistent, reliable, and durable in its operation.
In essence, "more rock solid" amplifies the rootedness, stability, and unwavering nature of the subject under discussion, presenting it as being even more immovable and resilient than something else that is already considered steadfast.
