The phrase "and less solid than" is correct and usable in written English.
It can be used when comparing the solidity or firmness of two objects or concepts, indicating that one is not as solid as the other.
Example: "The new material is lighter and less solid than the previous version, making it easier to handle."
Alternatives: "and not as firm as" or "and more fragile than".
Granting that the distinctions between fiction and nonfiction are less solid than we sometimes think, what inspired your turn back to fiction?
The concern economists have, however, is that the March and April figures were less solid than those in December, January and February, which could presage another summer slump in job growth, as occurred in both 2010 and 2011.
They were not helped by an illness to Dejan Lovren, which saw Jos Hooiveld come in for his first league start this season, and left their defence looking less solid than it has for most of the campaign.
Our findings are mainly in line with existing epidemiological evidence, although the magnitude of the risk estimates obtained and their precision may be less solid than the precision of multicenter studies conducted in larger cities.
The walls are thickly dressed in hand-thrown rendering and then whitewashed, so that they seem less solid than the roof; such daring gives the building a quality of inexplicability, like Stonehenge or the White Horse of Uffington.
Now, the rate for a risk-free investment may need to be approximated, and the center of the global financial structure seems much less solid than it was just a few years ago.
The rescue package for the business-class-only carrier announced earlier this week was rather less solid than it sounded: the deal is off, and all Silverjet's staff have been sacked.Administrator Begbies Traynor said that, due to "unusually complex negotiations" with third parties, Kingplace was "no longer in a position to acquire Silverjet as a going concern".
