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Toughen has 33 synonyms. The top synonyms for toughen are restrengthen, reinvigorate, case harden, acclimatize, invigorate, hang tough, undergird, reinforce and 25 more. Browse the full list below.
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| Random | DefinitionA common synonym for toughen is restrengthen. Other synonyms include reinvigorate, case harden, acclimatize, invigorate.
Toughen has 33 synonyms listed on Thesaurasize.
(v): to make tough; to become tough
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