What does solidness mean?
Solidness is the noun form of solid and describes the quality or state of being firm, dense, stable, and difficult to break, move, or penetrate. In its physical sense, it can refer to the solidness of a material, structure, or object. The word also has an established figurative use for the strength and coherence of an argument, theory, or body of evidence: a claim may have solidness when it is well supported and difficult to dispute. Because solidness is more explicit than solidity, it often conveys a stronger sense of physical firmness or durability, although the two words overlap. In abstract discussions, solidness carries a relatively formal tone and implies reliability rather than mere existence. It is especially useful when discussing the practical or evidential basis of a conclusion, as in questions about the solidness of a proof or the solidness of someone’s position.
nounThe quality or state of being solid, especially in the sense of being firm, dense, or not easily moved or broken. It can also refer to the strength, coherence, or reliability of an argument, theory, or structure.
- The quality or state of being physically solid, firm, dense, or resistant to movement or breakage.
- The strength, coherence, or persuasive force of an argument, theory, claim, or supporting evidence.
"The solidness of the old stone walls gave the building an unmistakable sense of permanence."
"The sculptor tested the solidness of the material before beginning work."
"Critics questioned the solidness of the evidence presented by the committee."
The plural is uncommon; solidness is normally used as an uncountable noun.
"The different solidnesses of the materials were compared before construction began."
Solidness is where a firm object meets a convincing argument: it describes both what cannot easily be moved and what cannot easily be shaken.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does solidness come from?
Solidness was formed in English by adding the suffix -ness to solid. The adjective solid comes through Old French solide from Latin solidus, meaning “solid,” “firm,” or “whole,” a word associated with the idea of a compact or undivided substance. Related English formations include solidity, solidify, and consolidate, all reflecting the same Latin root.
How solidness is actually used
In physical contexts, solidness emphasizes firmness, density, or structural strength. In figurative contexts, it is somewhat formal and usually suggests that an argument or conclusion is well founded, stable, and difficult to challenge.
Easily confused with solidness
Solidness more directly denotes the degree or quality of being solid, while solidity can also refer to the state of being solid and is especially common in technical and abstract contexts.
Solid is an adjective describing something that is firm or not liquid, whereas solidness names the quality or state of being solid.