solid
Easy difficulty
What does “solid” mean?
firm and stable in shape; not liquid or fluid.
SAT Usage
this term often appears in contexts related to science, engineering, or physical properties, emphasizing stability and reliability in structures or materials. It suggests a sense of permanence and strength, distinguishing it from similar words like "fluid," which implies changeability or instability.
Common Confusions
Solid implies firmness and stability in structure, while liquid usually suggests a formless and adaptable state that can easily change shape.
Do not choose fluid if the context emphasizes a lack of firmness or stability rather than being firm and stable in shape.
Example Sentences
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The foundation of the building must be solid to bear the weight.
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I owe him; he did me a solid last year.
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I prefer solids over paisleys.
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Almost all metals are solid at room temperature.
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I don't think Dave would have done that. He's a solid dude.