- present participle of toughen.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Toughening up the dress made it feel, to me, like armor: concealing more than it showed, feminine but not obviously sexy.
From Salon • Jun. 12, 2026
Toughening the California border in the 1990s pushed illegal traffic eastward into Arizona, but lately crossings have dropped there, too.
From Washington Post • Jun. 4, 2018
Toughening global competition makes many workers fear that if they win raises big enough to force price boosts, they will lose out to lower-wage foreign labor.
From Time Magazine Archive
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Toughening his face by marinating it in brine, hardening his jaw by chomping pine gum, Dempsey set out hoboing across the West and brawling in saloons.
From Time Magazine Archive
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Toughening their attitudes, the Allies emphasized Cordell Hull's warning that neutrals must abandon munitions trade with Germany or face the consequences.
From Time Magazine Archive
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