What is the meaning of Toughen?

(v.i.&t.) To grow or make tough or tougher.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). toughen. Retrieved September 27, 2026, from http://smartdefine.org/toughen/definitions/2073562
ChicagoWebster's. 2011. "toughen" http://smartdefine.org/toughen/definitions/2073562 (accessed September 27, 2026).
HarvardWebster's 2011, toughen, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/toughen/definitions/2073562>.
MLAWebster's. "toughen" 28 May 2011. Web. 27 September 2026. <http://smartdefine.org/toughen/definitions/2073562>
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