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noundevoid of passion or feeling; hardheartedness
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nounexcessive sternnesstype of:
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"he assigned a series of problems of increasing hardness"nounthe quality of being difficult to do
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"the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present"nouna quality of water that contains dissolved mineral salts that prevent soap from latheringtype of:
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nounthe property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scaleOpposite:type of:
Synonyms & Similar Words
hard body quality substance difficulty consistency rigor severity firmness harshness insensitivity strictness callousness stiffness dullness rigorousness sternness consistence rigour callosity insensibility unfeelingness insensitiveness inclemency rigourousness severeness ruggedness difficultness incompressibility