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Synonyms & Antonyms of fastness
1
a high rate of movement or performance
- the amazing fastness with which the boy took his shower had us wondering if he'd used any water
Synonyms for fastness
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2
a structure or place from which one can resist attack
- the guerillas retreated to their network of hidden fastnesses deep within the mountains
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3
adherence to something to which one is bound by a pledge or duty
- his uncompromising fastness to the cause of freedom was beyond question
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The first known use of fastness was before the 12th century
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