English dictionary
toughness
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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enduring strength and energy
Source: WordNet 3.0
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the property of being big and strong
Source: WordNet 3.0
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the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
Synonyms temperSource: WordNet 3.0
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impressive difficulty
Synonyms formidabilitySource: WordNet 3.0
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The quality or state of being tough.
Source: webster1913