transitive verb un·stiffen \"+\

Definition of unstiffen

  1. :  to remove the stiffness from :  make limp or flexible the penetrating heat unstiffens his joints pragmatism unstiffens all our theories, limbers them up and sets each one at work — William James

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Origin and Etymology of unstiffen

2un- + stiffen

Seen and Heard

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to criticize severely

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