Englishfor English speakers
solid
Adjective
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If something is solid, it is hard and keeps its shape.
When he went out in the morning, the water had frozen solid.
After it has cooled, the solid gold is moved to a safer place.
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If something is solid mathx/math, its only material is mathx/math.
Copper mixed with silver made a much cheaper spoon than solid silver.
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If something is solid, it has not spaces inside or between.
The traffic was a solid line of cars as far as you could see.
The wall looked solid, but when he knocked it made a hollow sound.
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If something is solid, it is good and will not break or change easily.
Don't worry about the chair. It's solid as a rock.
The police had enough solid evidence to put him in jail.
solid
Noun
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A solid is a material which keeps its shape. It is not a liquid (like water) or a gas (like air).
fuel
Noun
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Something use to make energy.
My car uses gasoline for fuel to make it go. My body uses food for fuel, it's what makes me go.
fuel
Verb
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When you fuel something, you add on to it.
His words fuelled my anger.