conserve
noun
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fruit preserved by cooking with sugarpreserveconservespreserves
verb
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to preserve with sugar“We always conserved the strawberries we grew in the backyard.”
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to use cautiously and frugallyhusbandeconomizeeconomise
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to keep in safety and protect from harm, decay, loss, or destruction“We conserve food for bad times.”preservekeep upmaintain
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to keep constant through physical or chemical reactions or evolutionary change“Energy is conserved in this process”